diff --git a/catalog/camel-catalog/src/generated/resources/org/apache/camel/catalog/languages/simple.json b/catalog/camel-catalog/src/generated/resources/org/apache/camel/catalog/languages/simple.json
index 1044b4db7c324..e367616f4fe9e 100644
--- a/catalog/camel-catalog/src/generated/resources/org/apache/camel/catalog/languages/simple.json
+++ b/catalog/camel-catalog/src/generated/resources/org/apache/camel/catalog/languages/simple.json
@@ -85,39 +85,40 @@
     "messageTimestamp": { "index": 59, "kind": "function", "displayName": "Message Timestamp", "group": "function", "label": "function", "required": false, "javaType": "long", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "The message timestamp (millis since epoc) that this message originates from. Some systems like JMS, Kafka, AWS have a timestamp on the event\/message that Camel received. This method returns the timestamp if a timestamp exists. The message timestamp and exchange created are different. An exchange always has a created timestamp which is the local timestamp when Camel created the exchange. The message timestamp is only available in some Camel components when the consumer is able to extract the timestamp from the source event. If the message has no timestamp, then 0 is returned.", "ognl": false, "suffix": "}" },
     "min(val...)": { "index": 60, "kind": "function", "displayName": "Minimum Number", "group": "function", "label": "function", "required": false, "javaType": "long", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "Returns the minimum number from all the values", "ognl": false, "suffix": "}" },
     "newEmpty(type)": { "index": 61, "kind": "function", "displayName": "Create Empty Object", "group": "function", "label": "function", "required": false, "javaType": "Object", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "Creates a new empty object (decided by type). Use `string` to create an empty String. Use `list` to create an empty `java.util.ArrayList`. Use `map` to create an empty `java.util.LinkedHashMap`. Use `set` to create an empty `java.util.LinkedHashSet`.", "ognl": false, "suffix": "}" },
-    "null": { "index": 62, "kind": "function", "displayName": "Null", "group": "function", "label": "function", "required": false, "javaType": "Object", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "Represents a null value", "ognl": false, "suffix": "}" },
-    "originalBody": { "index": 63, "kind": "function", "displayName": "Original Body", "group": "function", "label": "function", "required": false, "javaType": "Object", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "The original incoming body (only available if allowUseOriginalMessage=true).", "ognl": false, "suffix": "}" },
-    "pad(exp,width,separator)": { "index": 64, "kind": "function", "displayName": "Pad String", "group": "function", "label": "function", "required": false, "javaType": "String", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "Pads the expression with extra padding if necessary, according the the total width. The separator is by default a space. If the width is negative then padding to the right, otherwise to the left.", "ognl": false, "suffix": "}" },
-    "pretty(exp)": { "index": 65, "kind": "function", "displayName": "Pretty Print", "group": "function", "label": "function", "required": false, "javaType": "String", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "Converts the expression to a String, and attempts to pretty print if JSon or XML, otherwise the expression is returned as the String value.", "ognl": false, "suffix": "}" },
-    "prettyBody": { "index": 66, "kind": "function", "displayName": "Pretty Body", "group": "function", "label": "function", "required": false, "javaType": "String", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "Converts the body to a String, and attempts to pretty print if JSon or XML; otherwise the body is returned as the String value.", "ognl": false, "suffix": "}" },
-    "properties:key:default": { "index": 67, "kind": "function", "displayName": "Property Placeholder", "group": "function", "label": "function", "required": false, "javaType": "String", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "Lookup a property placeholder with the given key. If the key does not exist nor has a value, then an optional default value can be specified.", "ognl": false, "suffix": "}" },
-    "propertiesExist:key": { "index": 68, "kind": "function", "displayName": "Property Placeholder Exists", "group": "function", "label": "function", "required": false, "javaType": "boolean", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "Checks whether a property placeholder with the given key exists or not. The result can be negated by prefixing the key with !", "ognl": false, "suffix": "}" },
-    "random(min,max)": { "index": 69, "kind": "function", "displayName": "Random", "group": "function", "label": "function", "required": false, "javaType": "int", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "Returns a random number between min and max (exclusive)", "ognl": false, "suffix": "}" },
-    "ref:name": { "index": 70, "kind": "function", "displayName": "Bean By Id", "group": "function", "label": "function", "required": false, "javaType": "Object", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "To look up a bean from the Registry with the given name.", "ognl": false, "suffix": "}" },
-    "replace(from,to,exp)": { "index": 71, "kind": "function", "displayName": "Replace String Values", "group": "function", "label": "function", "required": false, "javaType": "String", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "Replace all the string values in the message body\/expression. To make it easier to replace single and double quotes, then you can use XML escaped values `\\"` as double quote, `\\'` as single quote, and `\\∅` as empty value.", "ognl": false, "suffix": "}" },
-    "routeGroup": { "index": 72, "kind": "function", "displayName": "Route Group", "group": "function", "label": "function", "required": false, "javaType": "String", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "The route group of the current route the Exchange is being routed. Not all routes have a group assigned, so this may be null.", "ognl": false, "suffix": "}" },
-    "routeId": { "index": 73, "kind": "function", "displayName": "Route Id", "group": "function", "label": "function", "required": false, "javaType": "String", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "The route id of the current route the Exchange is being routed", "ognl": false, "suffix": "}" },
-    "setHeader(name,type,exp)": { "index": 74, "kind": "function", "displayName": "Set Header", "group": "function", "label": "function", "required": false, "javaType": "Object", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "Sets a message header with the given expression (optional converting to the given type)", "ognl": false, "suffix": "}" },
-    "setVariable(name,type,exp)": { "index": 75, "kind": "function", "displayName": "Set Variable", "group": "function", "label": "function", "required": false, "javaType": "Object", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "Sets a variable with the given expression (optional converting to the given type)", "ognl": false, "suffix": "}" },
-    "size(exp)": { "index": 76, "kind": "function", "displayName": "Size", "group": "function", "label": "function", "required": false, "javaType": "int", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "The size of the message body (or expression). If the payload is java.util.Collection or java.util.Map based then the size is the number of elements; otherwise the payload size in bytes.", "ognl": false, "suffix": "}" },
-    "skip(num)": { "index": 77, "kind": "function", "displayName": "Skip First Items from the Message Body", "group": "function", "label": "function", "required": false, "javaType": "java.util.Iterator", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "The skip function iterates the message body and skips the first number of items. This can be used with the Splitter EIP to split a message body and skip the first N number of items.", "ognl": false, "suffix": "}" },
-    "split(exp,separator)": { "index": 78, "kind": "function", "displayName": "Split String Values", "group": "function", "label": "function", "required": false, "javaType": "String[]", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "Splits the message body\/expression as a String value using the separator into a String array", "ognl": false, "suffix": "}" },
-    "stepId": { "index": 79, "kind": "function", "displayName": "Step Id", "group": "function", "label": "function", "required": false, "javaType": "String", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "Returns the id of the current step the Exchange is being routed.", "ognl": false, "suffix": "}" },
-    "substring(head,tail)": { "index": 80, "kind": "function", "displayName": "Substring", "group": "function", "label": "function", "required": false, "javaType": "String", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "Returns a substring of the message body\/expression. If only one positive number, then the returned string is clipped from the beginning. If only one negative number, then the returned string is clipped from the beginning. Otherwise the returned string is clipped between the head and tail positions.", "ognl": false, "suffix": "}" },
-    "substringAfter(exp,before)": { "index": 81, "kind": "function", "displayName": "Substring After", "group": "function", "label": "function", "required": false, "javaType": "String", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "Returns a substring of the message body\/expression that comes after. Returns null if nothing comes after.", "ognl": false, "suffix": "}" },
-    "substringBefore(exp,before)": { "index": 82, "kind": "function", "displayName": "Substring Before", "group": "function", "label": "function", "required": false, "javaType": "String", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "Returns a substring of the message body\/expression that comes before. Returns null if nothing comes before.", "ognl": false, "suffix": "}" },
-    "substringBetween(exp,after,before)": { "index": 83, "kind": "function", "displayName": "Substring Between", "group": "function", "label": "function", "required": false, "javaType": "String", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "Returns a substring of the message body\/expression that are between after and before. Returns null if nothing comes between.", "ognl": false, "suffix": "}" },
-    "sum(val...)": { "index": 84, "kind": "function", "displayName": "Calculate Sum Number", "group": "function", "label": "function", "required": false, "javaType": "long", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "Sums together all the values as integral numbers. This function can also be used to subtract by using negative numbers.", "ognl": false, "suffix": "}" },
-    "sys.name": { "index": 85, "kind": "function", "displayName": "JVM System Property", "group": "function", "label": "function", "required": false, "javaType": "Object", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "The JVM system property with the given name", "ognl": false, "suffix": "}" },
-    "threadId": { "index": 86, "kind": "function", "displayName": "Thread Id", "group": "function", "label": "function", "required": false, "javaType": "long", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "Returns the id of the current thread. Can be used for logging.", "ognl": false, "suffix": "}" },
-    "threadName": { "index": 87, "kind": "function", "displayName": "Thread Name", "group": "function", "label": "function", "required": false, "javaType": "String", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "Returns the name of the current thread. Can be used for logging.", "ognl": false, "suffix": "}" },
-    "trim(exp)": { "index": 88, "kind": "function", "displayName": "Trim", "group": "function", "label": "function", "required": false, "javaType": "String", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "The trim function trims the message body (or expression) by removing all leading and trailing white spaces.", "ognl": false, "suffix": "}" },
-    "type:name.field": { "index": 89, "kind": "function", "displayName": "Java Field Value", "group": "function", "label": "function", "required": false, "javaType": "Object", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "To refer to a type or field by its classname. To refer to a field, you can append .FIELD_NAME. For example, you can refer to the constant field from Exchange as: `org.apache.camel.Exchange.FILE_NAME`", "ognl": false, "suffix": "}" },
-    "uppercase(exp)": { "index": 90, "kind": "function", "displayName": "Uppercase", "group": "function", "label": "function", "required": false, "javaType": "String", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "Uppercases the message body (or expression)", "ognl": false, "suffix": "}" },
-    "uuid(type)": { "index": 91, "kind": "function", "displayName": "Generate UUID", "group": "function", "label": "function", "required": false, "javaType": "String", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "Returns a UUID using the Camel `UuidGenerator`. You can choose between `default`, `classic`, `short` and `simple` as the type. If no type is given, the default is used. It is also possible to use a custom `UuidGenerator` and bind the bean to the Registry with an id. For example `${uuid(myGenerator)}` where the ID is _myGenerator_.", "ognl": false, "suffix": "}" },
-    "variable.name": { "index": 92, "kind": "function", "displayName": "Variable", "group": "function", "label": "function", "required": false, "javaType": "Object", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "The variable with the given name", "ognl": true, "suffix": "}" },
-    "variableAs(key,type)": { "index": 93, "kind": "function", "displayName": "Variable As", "group": "function", "label": "function", "required": false, "javaType": "Object", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "Converts the variable to the given type (classname).", "ognl": false, "suffix": "}" },
-    "variables": { "index": 94, "kind": "function", "displayName": "Variables", "group": "function", "label": "function", "required": false, "javaType": "java.util.Map", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "Returns all the variables from the current Exchange in a Map", "ognl": false, "suffix": "}" },
-    "xpath(input,exp)": { "index": 95, "kind": "function", "displayName": "XPath", "group": "function", "label": "function", "required": false, "javaType": "Object", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "When working with XML data, then this allows using the XPath language, for example, to extract data from the message body (in XML format). This requires having camel-xpath JAR on the classpath. For input (optional), you can choose `header:key`, `exchangeProperty:key` or `variable:key` to use as input for the XML payload instead of the message body.", "ognl": false, "suffix": "}" }
+    "not": { "index": 62, "kind": "function", "displayName": "Not", "group": "function", "label": "function", "required": false, "javaType": "boolean", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "Evaluates the predicate and returns the opposite.", "ognl": false, "suffix": "}" },
+    "null": { "index": 63, "kind": "function", "displayName": "Null", "group": "function", "label": "function", "required": false, "javaType": "Object", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "Represents a null value", "ognl": false, "suffix": "}" },
+    "originalBody": { "index": 64, "kind": "function", "displayName": "Original Body", "group": "function", "label": "function", "required": false, "javaType": "Object", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "The original incoming body (only available if allowUseOriginalMessage=true).", "ognl": false, "suffix": "}" },
+    "pad(exp,width,separator)": { "index": 65, "kind": "function", "displayName": "Pad String", "group": "function", "label": "function", "required": false, "javaType": "String", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "Pads the expression with extra padding if necessary, according the the total width. The separator is by default a space. If the width is negative then padding to the right, otherwise to the left.", "ognl": false, "suffix": "}" },
+    "pretty(exp)": { "index": 66, "kind": "function", "displayName": "Pretty Print", "group": "function", "label": "function", "required": false, "javaType": "String", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "Converts the expression to a String, and attempts to pretty print if JSon or XML, otherwise the expression is returned as the String value.", "ognl": false, "suffix": "}" },
+    "prettyBody": { "index": 67, "kind": "function", "displayName": "Pretty Body", "group": "function", "label": "function", "required": false, "javaType": "String", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "Converts the body to a String, and attempts to pretty print if JSon or XML; otherwise the body is returned as the String value.", "ognl": false, "suffix": "}" },
+    "properties:key:default": { "index": 68, "kind": "function", "displayName": "Property Placeholder", "group": "function", "label": "function", "required": false, "javaType": "String", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "Lookup a property placeholder with the given key. If the key does not exist nor has a value, then an optional default value can be specified.", "ognl": false, "suffix": "}" },
+    "propertiesExist:key": { "index": 69, "kind": "function", "displayName": "Property Placeholder Exists", "group": "function", "label": "function", "required": false, "javaType": "boolean", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "Checks whether a property placeholder with the given key exists or not. The result can be negated by prefixing the key with !", "ognl": false, "suffix": "}" },
+    "random(min,max)": { "index": 70, "kind": "function", "displayName": "Random", "group": "function", "label": "function", "required": false, "javaType": "int", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "Returns a random number between min and max (exclusive)", "ognl": false, "suffix": "}" },
+    "ref:name": { "index": 71, "kind": "function", "displayName": "Bean By Id", "group": "function", "label": "function", "required": false, "javaType": "Object", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "To look up a bean from the Registry with the given name.", "ognl": false, "suffix": "}" },
+    "replace(from,to,exp)": { "index": 72, "kind": "function", "displayName": "Replace String Values", "group": "function", "label": "function", "required": false, "javaType": "String", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "Replace all the string values in the message body\/expression. To make it easier to replace single and double quotes, then you can use XML escaped values `\\"` as double quote, `\\'` as single quote, and `\\∅` as empty value.", "ognl": false, "suffix": "}" },
+    "routeGroup": { "index": 73, "kind": "function", "displayName": "Route Group", "group": "function", "label": "function", "required": false, "javaType": "String", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "The route group of the current route the Exchange is being routed. Not all routes have a group assigned, so this may be null.", "ognl": false, "suffix": "}" },
+    "routeId": { "index": 74, "kind": "function", "displayName": "Route Id", "group": "function", "label": "function", "required": false, "javaType": "String", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "The route id of the current route the Exchange is being routed", "ognl": false, "suffix": "}" },
+    "setHeader(name,type,exp)": { "index": 75, "kind": "function", "displayName": "Set Header", "group": "function", "label": "function", "required": false, "javaType": "Object", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "Sets a message header with the given expression (optional converting to the given type)", "ognl": false, "suffix": "}" },
+    "setVariable(name,type,exp)": { "index": 76, "kind": "function", "displayName": "Set Variable", "group": "function", "label": "function", "required": false, "javaType": "Object", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "Sets a variable with the given expression (optional converting to the given type)", "ognl": false, "suffix": "}" },
+    "size(exp)": { "index": 77, "kind": "function", "displayName": "Size", "group": "function", "label": "function", "required": false, "javaType": "int", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "The size of the message body (or expression). If the payload is java.util.Collection or java.util.Map based then the size is the number of elements; otherwise the payload size in bytes.", "ognl": false, "suffix": "}" },
+    "skip(num)": { "index": 78, "kind": "function", "displayName": "Skip First Items from the Message Body", "group": "function", "label": "function", "required": false, "javaType": "java.util.Iterator", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "The skip function iterates the message body and skips the first number of items. This can be used with the Splitter EIP to split a message body and skip the first N number of items.", "ognl": false, "suffix": "}" },
+    "split(exp,separator)": { "index": 79, "kind": "function", "displayName": "Split String Values", "group": "function", "label": "function", "required": false, "javaType": "String[]", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "Splits the message body\/expression as a String value using the separator into a String array", "ognl": false, "suffix": "}" },
+    "stepId": { "index": 80, "kind": "function", "displayName": "Step Id", "group": "function", "label": "function", "required": false, "javaType": "String", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "Returns the id of the current step the Exchange is being routed.", "ognl": false, "suffix": "}" },
+    "substring(head,tail)": { "index": 81, "kind": "function", "displayName": "Substring", "group": "function", "label": "function", "required": false, "javaType": "String", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "Returns a substring of the message body\/expression. If only one positive number, then the returned string is clipped from the beginning. If only one negative number, then the returned string is clipped from the beginning. Otherwise the returned string is clipped between the head and tail positions.", "ognl": false, "suffix": "}" },
+    "substringAfter(exp,before)": { "index": 82, "kind": "function", "displayName": "Substring After", "group": "function", "label": "function", "required": false, "javaType": "String", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "Returns a substring of the message body\/expression that comes after. Returns null if nothing comes after.", "ognl": false, "suffix": "}" },
+    "substringBefore(exp,before)": { "index": 83, "kind": "function", "displayName": "Substring Before", "group": "function", "label": "function", "required": false, "javaType": "String", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "Returns a substring of the message body\/expression that comes before. Returns null if nothing comes before.", "ognl": false, "suffix": "}" },
+    "substringBetween(exp,after,before)": { "index": 84, "kind": "function", "displayName": "Substring Between", "group": "function", "label": "function", "required": false, "javaType": "String", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "Returns a substring of the message body\/expression that are between after and before. Returns null if nothing comes between.", "ognl": false, "suffix": "}" },
+    "sum(val...)": { "index": 85, "kind": "function", "displayName": "Calculate Sum Number", "group": "function", "label": "function", "required": false, "javaType": "long", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "Sums together all the values as integral numbers. This function can also be used to subtract by using negative numbers.", "ognl": false, "suffix": "}" },
+    "sys.name": { "index": 86, "kind": "function", "displayName": "JVM System Property", "group": "function", "label": "function", "required": false, "javaType": "Object", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "The JVM system property with the given name", "ognl": false, "suffix": "}" },
+    "threadId": { "index": 87, "kind": "function", "displayName": "Thread Id", "group": "function", "label": "function", "required": false, "javaType": "long", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "Returns the id of the current thread. Can be used for logging.", "ognl": false, "suffix": "}" },
+    "threadName": { "index": 88, "kind": "function", "displayName": "Thread Name", "group": "function", "label": "function", "required": false, "javaType": "String", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "Returns the name of the current thread. Can be used for logging.", "ognl": false, "suffix": "}" },
+    "trim(exp)": { "index": 89, "kind": "function", "displayName": "Trim", "group": "function", "label": "function", "required": false, "javaType": "String", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "The trim function trims the message body (or expression) by removing all leading and trailing white spaces.", "ognl": false, "suffix": "}" },
+    "type:name.field": { "index": 90, "kind": "function", "displayName": "Java Field Value", "group": "function", "label": "function", "required": false, "javaType": "Object", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "To refer to a type or field by its classname. To refer to a field, you can append .FIELD_NAME. For example, you can refer to the constant field from Exchange as: `org.apache.camel.Exchange.FILE_NAME`", "ognl": false, "suffix": "}" },
+    "uppercase(exp)": { "index": 91, "kind": "function", "displayName": "Uppercase", "group": "function", "label": "function", "required": false, "javaType": "String", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "Uppercases the message body (or expression)", "ognl": false, "suffix": "}" },
+    "uuid(type)": { "index": 92, "kind": "function", "displayName": "Generate UUID", "group": "function", "label": "function", "required": false, "javaType": "String", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "Returns a UUID using the Camel `UuidGenerator`. You can choose between `default`, `classic`, `short` and `simple` as the type. If no type is given, the default is used. It is also possible to use a custom `UuidGenerator` and bind the bean to the Registry with an id. For example `${uuid(myGenerator)}` where the ID is _myGenerator_.", "ognl": false, "suffix": "}" },
+    "variable.name": { "index": 93, "kind": "function", "displayName": "Variable", "group": "function", "label": "function", "required": false, "javaType": "Object", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "The variable with the given name", "ognl": true, "suffix": "}" },
+    "variableAs(key,type)": { "index": 94, "kind": "function", "displayName": "Variable As", "group": "function", "label": "function", "required": false, "javaType": "Object", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "Converts the variable to the given type (classname).", "ognl": false, "suffix": "}" },
+    "variables": { "index": 95, "kind": "function", "displayName": "Variables", "group": "function", "label": "function", "required": false, "javaType": "java.util.Map", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "Returns all the variables from the current Exchange in a Map", "ognl": false, "suffix": "}" },
+    "xpath(input,exp)": { "index": 96, "kind": "function", "displayName": "XPath", "group": "function", "label": "function", "required": false, "javaType": "Object", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "When working with XML data, then this allows using the XPath language, for example, to extract data from the message body (in XML format). This requires having camel-xpath JAR on the classpath. For input (optional), you can choose `header:key`, `exchangeProperty:key` or `variable:key` to use as input for the XML payload instead of the message body.", "ognl": false, "suffix": "}" }
   }
 }
diff --git a/components/camel-csimple-joor/src/test/java/org/apache/camel/language/csimple/joor/OriginalSimpleTest.java b/components/camel-csimple-joor/src/test/java/org/apache/camel/language/csimple/joor/OriginalSimpleTest.java
index 49c0fa4a198f6..1a76affa12bbb 100644
--- a/components/camel-csimple-joor/src/test/java/org/apache/camel/language/csimple/joor/OriginalSimpleTest.java
+++ b/components/camel-csimple-joor/src/test/java/org/apache/camel/language/csimple/joor/OriginalSimpleTest.java
@@ -3136,6 +3136,24 @@ public void testDistinct() {
         assertEquals("[]", s);
     }
 
+    @Test
+    public void testNot() {
+        exchange.getMessage().setBody("");
+        Expression expression = context.resolveLanguage("csimple").createExpression("${not()}");
+        assertTrue(expression.evaluate(exchange, Boolean.class));
+
+        exchange.getMessage().setBody("Hello");
+        expression = context.resolveLanguage("csimple").createExpression("${not()}");
+        assertFalse(expression.evaluate(exchange, Boolean.class));
+
+        expression = context.resolveLanguage("csimple").createExpression("${not(${body} == 'Hello')}");
+        assertFalse(expression.evaluate(exchange, Boolean.class));
+
+        exchange.getMessage().setBody("Bye");
+        expression = context.resolveLanguage("csimple").createExpression("${not(${body} == 'Hello')}");
+        assertTrue(expression.evaluate(exchange, Boolean.class));
+    }
+
     @Override
     protected String getLanguageName() {
         return "csimple";
diff --git a/core/camel-core-languages/src/generated/resources/META-INF/org/apache/camel/language/simple/simple.json b/core/camel-core-languages/src/generated/resources/META-INF/org/apache/camel/language/simple/simple.json
index 1044b4db7c324..e367616f4fe9e 100644
--- a/core/camel-core-languages/src/generated/resources/META-INF/org/apache/camel/language/simple/simple.json
+++ b/core/camel-core-languages/src/generated/resources/META-INF/org/apache/camel/language/simple/simple.json
@@ -85,39 +85,40 @@
     "messageTimestamp": { "index": 59, "kind": "function", "displayName": "Message Timestamp", "group": "function", "label": "function", "required": false, "javaType": "long", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "The message timestamp (millis since epoc) that this message originates from. Some systems like JMS, Kafka, AWS have a timestamp on the event\/message that Camel received. This method returns the timestamp if a timestamp exists. The message timestamp and exchange created are different. An exchange always has a created timestamp which is the local timestamp when Camel created the exchange. The message timestamp is only available in some Camel components when the consumer is able to extract the timestamp from the source event. If the message has no timestamp, then 0 is returned.", "ognl": false, "suffix": "}" },
     "min(val...)": { "index": 60, "kind": "function", "displayName": "Minimum Number", "group": "function", "label": "function", "required": false, "javaType": "long", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "Returns the minimum number from all the values", "ognl": false, "suffix": "}" },
     "newEmpty(type)": { "index": 61, "kind": "function", "displayName": "Create Empty Object", "group": "function", "label": "function", "required": false, "javaType": "Object", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "Creates a new empty object (decided by type). Use `string` to create an empty String. Use `list` to create an empty `java.util.ArrayList`. Use `map` to create an empty `java.util.LinkedHashMap`. Use `set` to create an empty `java.util.LinkedHashSet`.", "ognl": false, "suffix": "}" },
-    "null": { "index": 62, "kind": "function", "displayName": "Null", "group": "function", "label": "function", "required": false, "javaType": "Object", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "Represents a null value", "ognl": false, "suffix": "}" },
-    "originalBody": { "index": 63, "kind": "function", "displayName": "Original Body", "group": "function", "label": "function", "required": false, "javaType": "Object", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "The original incoming body (only available if allowUseOriginalMessage=true).", "ognl": false, "suffix": "}" },
-    "pad(exp,width,separator)": { "index": 64, "kind": "function", "displayName": "Pad String", "group": "function", "label": "function", "required": false, "javaType": "String", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "Pads the expression with extra padding if necessary, according the the total width. The separator is by default a space. If the width is negative then padding to the right, otherwise to the left.", "ognl": false, "suffix": "}" },
-    "pretty(exp)": { "index": 65, "kind": "function", "displayName": "Pretty Print", "group": "function", "label": "function", "required": false, "javaType": "String", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "Converts the expression to a String, and attempts to pretty print if JSon or XML, otherwise the expression is returned as the String value.", "ognl": false, "suffix": "}" },
-    "prettyBody": { "index": 66, "kind": "function", "displayName": "Pretty Body", "group": "function", "label": "function", "required": false, "javaType": "String", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "Converts the body to a String, and attempts to pretty print if JSon or XML; otherwise the body is returned as the String value.", "ognl": false, "suffix": "}" },
-    "properties:key:default": { "index": 67, "kind": "function", "displayName": "Property Placeholder", "group": "function", "label": "function", "required": false, "javaType": "String", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "Lookup a property placeholder with the given key. If the key does not exist nor has a value, then an optional default value can be specified.", "ognl": false, "suffix": "}" },
-    "propertiesExist:key": { "index": 68, "kind": "function", "displayName": "Property Placeholder Exists", "group": "function", "label": "function", "required": false, "javaType": "boolean", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "Checks whether a property placeholder with the given key exists or not. The result can be negated by prefixing the key with !", "ognl": false, "suffix": "}" },
-    "random(min,max)": { "index": 69, "kind": "function", "displayName": "Random", "group": "function", "label": "function", "required": false, "javaType": "int", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "Returns a random number between min and max (exclusive)", "ognl": false, "suffix": "}" },
-    "ref:name": { "index": 70, "kind": "function", "displayName": "Bean By Id", "group": "function", "label": "function", "required": false, "javaType": "Object", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "To look up a bean from the Registry with the given name.", "ognl": false, "suffix": "}" },
-    "replace(from,to,exp)": { "index": 71, "kind": "function", "displayName": "Replace String Values", "group": "function", "label": "function", "required": false, "javaType": "String", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "Replace all the string values in the message body\/expression. To make it easier to replace single and double quotes, then you can use XML escaped values `\\"` as double quote, `\\'` as single quote, and `\\∅` as empty value.", "ognl": false, "suffix": "}" },
-    "routeGroup": { "index": 72, "kind": "function", "displayName": "Route Group", "group": "function", "label": "function", "required": false, "javaType": "String", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "The route group of the current route the Exchange is being routed. Not all routes have a group assigned, so this may be null.", "ognl": false, "suffix": "}" },
-    "routeId": { "index": 73, "kind": "function", "displayName": "Route Id", "group": "function", "label": "function", "required": false, "javaType": "String", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "The route id of the current route the Exchange is being routed", "ognl": false, "suffix": "}" },
-    "setHeader(name,type,exp)": { "index": 74, "kind": "function", "displayName": "Set Header", "group": "function", "label": "function", "required": false, "javaType": "Object", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "Sets a message header with the given expression (optional converting to the given type)", "ognl": false, "suffix": "}" },
-    "setVariable(name,type,exp)": { "index": 75, "kind": "function", "displayName": "Set Variable", "group": "function", "label": "function", "required": false, "javaType": "Object", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "Sets a variable with the given expression (optional converting to the given type)", "ognl": false, "suffix": "}" },
-    "size(exp)": { "index": 76, "kind": "function", "displayName": "Size", "group": "function", "label": "function", "required": false, "javaType": "int", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "The size of the message body (or expression). If the payload is java.util.Collection or java.util.Map based then the size is the number of elements; otherwise the payload size in bytes.", "ognl": false, "suffix": "}" },
-    "skip(num)": { "index": 77, "kind": "function", "displayName": "Skip First Items from the Message Body", "group": "function", "label": "function", "required": false, "javaType": "java.util.Iterator", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "The skip function iterates the message body and skips the first number of items. This can be used with the Splitter EIP to split a message body and skip the first N number of items.", "ognl": false, "suffix": "}" },
-    "split(exp,separator)": { "index": 78, "kind": "function", "displayName": "Split String Values", "group": "function", "label": "function", "required": false, "javaType": "String[]", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "Splits the message body\/expression as a String value using the separator into a String array", "ognl": false, "suffix": "}" },
-    "stepId": { "index": 79, "kind": "function", "displayName": "Step Id", "group": "function", "label": "function", "required": false, "javaType": "String", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "Returns the id of the current step the Exchange is being routed.", "ognl": false, "suffix": "}" },
-    "substring(head,tail)": { "index": 80, "kind": "function", "displayName": "Substring", "group": "function", "label": "function", "required": false, "javaType": "String", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "Returns a substring of the message body\/expression. If only one positive number, then the returned string is clipped from the beginning. If only one negative number, then the returned string is clipped from the beginning. Otherwise the returned string is clipped between the head and tail positions.", "ognl": false, "suffix": "}" },
-    "substringAfter(exp,before)": { "index": 81, "kind": "function", "displayName": "Substring After", "group": "function", "label": "function", "required": false, "javaType": "String", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "Returns a substring of the message body\/expression that comes after. Returns null if nothing comes after.", "ognl": false, "suffix": "}" },
-    "substringBefore(exp,before)": { "index": 82, "kind": "function", "displayName": "Substring Before", "group": "function", "label": "function", "required": false, "javaType": "String", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "Returns a substring of the message body\/expression that comes before. Returns null if nothing comes before.", "ognl": false, "suffix": "}" },
-    "substringBetween(exp,after,before)": { "index": 83, "kind": "function", "displayName": "Substring Between", "group": "function", "label": "function", "required": false, "javaType": "String", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "Returns a substring of the message body\/expression that are between after and before. Returns null if nothing comes between.", "ognl": false, "suffix": "}" },
-    "sum(val...)": { "index": 84, "kind": "function", "displayName": "Calculate Sum Number", "group": "function", "label": "function", "required": false, "javaType": "long", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "Sums together all the values as integral numbers. This function can also be used to subtract by using negative numbers.", "ognl": false, "suffix": "}" },
-    "sys.name": { "index": 85, "kind": "function", "displayName": "JVM System Property", "group": "function", "label": "function", "required": false, "javaType": "Object", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "The JVM system property with the given name", "ognl": false, "suffix": "}" },
-    "threadId": { "index": 86, "kind": "function", "displayName": "Thread Id", "group": "function", "label": "function", "required": false, "javaType": "long", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "Returns the id of the current thread. Can be used for logging.", "ognl": false, "suffix": "}" },
-    "threadName": { "index": 87, "kind": "function", "displayName": "Thread Name", "group": "function", "label": "function", "required": false, "javaType": "String", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "Returns the name of the current thread. Can be used for logging.", "ognl": false, "suffix": "}" },
-    "trim(exp)": { "index": 88, "kind": "function", "displayName": "Trim", "group": "function", "label": "function", "required": false, "javaType": "String", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "The trim function trims the message body (or expression) by removing all leading and trailing white spaces.", "ognl": false, "suffix": "}" },
-    "type:name.field": { "index": 89, "kind": "function", "displayName": "Java Field Value", "group": "function", "label": "function", "required": false, "javaType": "Object", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "To refer to a type or field by its classname. To refer to a field, you can append .FIELD_NAME. For example, you can refer to the constant field from Exchange as: `org.apache.camel.Exchange.FILE_NAME`", "ognl": false, "suffix": "}" },
-    "uppercase(exp)": { "index": 90, "kind": "function", "displayName": "Uppercase", "group": "function", "label": "function", "required": false, "javaType": "String", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "Uppercases the message body (or expression)", "ognl": false, "suffix": "}" },
-    "uuid(type)": { "index": 91, "kind": "function", "displayName": "Generate UUID", "group": "function", "label": "function", "required": false, "javaType": "String", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "Returns a UUID using the Camel `UuidGenerator`. You can choose between `default`, `classic`, `short` and `simple` as the type. If no type is given, the default is used. It is also possible to use a custom `UuidGenerator` and bind the bean to the Registry with an id. For example `${uuid(myGenerator)}` where the ID is _myGenerator_.", "ognl": false, "suffix": "}" },
-    "variable.name": { "index": 92, "kind": "function", "displayName": "Variable", "group": "function", "label": "function", "required": false, "javaType": "Object", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "The variable with the given name", "ognl": true, "suffix": "}" },
-    "variableAs(key,type)": { "index": 93, "kind": "function", "displayName": "Variable As", "group": "function", "label": "function", "required": false, "javaType": "Object", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "Converts the variable to the given type (classname).", "ognl": false, "suffix": "}" },
-    "variables": { "index": 94, "kind": "function", "displayName": "Variables", "group": "function", "label": "function", "required": false, "javaType": "java.util.Map", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "Returns all the variables from the current Exchange in a Map", "ognl": false, "suffix": "}" },
-    "xpath(input,exp)": { "index": 95, "kind": "function", "displayName": "XPath", "group": "function", "label": "function", "required": false, "javaType": "Object", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "When working with XML data, then this allows using the XPath language, for example, to extract data from the message body (in XML format). This requires having camel-xpath JAR on the classpath. For input (optional), you can choose `header:key`, `exchangeProperty:key` or `variable:key` to use as input for the XML payload instead of the message body.", "ognl": false, "suffix": "}" }
+    "not": { "index": 62, "kind": "function", "displayName": "Not", "group": "function", "label": "function", "required": false, "javaType": "boolean", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "Evaluates the predicate and returns the opposite.", "ognl": false, "suffix": "}" },
+    "null": { "index": 63, "kind": "function", "displayName": "Null", "group": "function", "label": "function", "required": false, "javaType": "Object", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "Represents a null value", "ognl": false, "suffix": "}" },
+    "originalBody": { "index": 64, "kind": "function", "displayName": "Original Body", "group": "function", "label": "function", "required": false, "javaType": "Object", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "The original incoming body (only available if allowUseOriginalMessage=true).", "ognl": false, "suffix": "}" },
+    "pad(exp,width,separator)": { "index": 65, "kind": "function", "displayName": "Pad String", "group": "function", "label": "function", "required": false, "javaType": "String", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "Pads the expression with extra padding if necessary, according the the total width. The separator is by default a space. If the width is negative then padding to the right, otherwise to the left.", "ognl": false, "suffix": "}" },
+    "pretty(exp)": { "index": 66, "kind": "function", "displayName": "Pretty Print", "group": "function", "label": "function", "required": false, "javaType": "String", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "Converts the expression to a String, and attempts to pretty print if JSon or XML, otherwise the expression is returned as the String value.", "ognl": false, "suffix": "}" },
+    "prettyBody": { "index": 67, "kind": "function", "displayName": "Pretty Body", "group": "function", "label": "function", "required": false, "javaType": "String", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "Converts the body to a String, and attempts to pretty print if JSon or XML; otherwise the body is returned as the String value.", "ognl": false, "suffix": "}" },
+    "properties:key:default": { "index": 68, "kind": "function", "displayName": "Property Placeholder", "group": "function", "label": "function", "required": false, "javaType": "String", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "Lookup a property placeholder with the given key. If the key does not exist nor has a value, then an optional default value can be specified.", "ognl": false, "suffix": "}" },
+    "propertiesExist:key": { "index": 69, "kind": "function", "displayName": "Property Placeholder Exists", "group": "function", "label": "function", "required": false, "javaType": "boolean", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "Checks whether a property placeholder with the given key exists or not. The result can be negated by prefixing the key with !", "ognl": false, "suffix": "}" },
+    "random(min,max)": { "index": 70, "kind": "function", "displayName": "Random", "group": "function", "label": "function", "required": false, "javaType": "int", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "Returns a random number between min and max (exclusive)", "ognl": false, "suffix": "}" },
+    "ref:name": { "index": 71, "kind": "function", "displayName": "Bean By Id", "group": "function", "label": "function", "required": false, "javaType": "Object", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "To look up a bean from the Registry with the given name.", "ognl": false, "suffix": "}" },
+    "replace(from,to,exp)": { "index": 72, "kind": "function", "displayName": "Replace String Values", "group": "function", "label": "function", "required": false, "javaType": "String", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "Replace all the string values in the message body\/expression. To make it easier to replace single and double quotes, then you can use XML escaped values `\\"` as double quote, `\\'` as single quote, and `\\∅` as empty value.", "ognl": false, "suffix": "}" },
+    "routeGroup": { "index": 73, "kind": "function", "displayName": "Route Group", "group": "function", "label": "function", "required": false, "javaType": "String", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "The route group of the current route the Exchange is being routed. Not all routes have a group assigned, so this may be null.", "ognl": false, "suffix": "}" },
+    "routeId": { "index": 74, "kind": "function", "displayName": "Route Id", "group": "function", "label": "function", "required": false, "javaType": "String", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "The route id of the current route the Exchange is being routed", "ognl": false, "suffix": "}" },
+    "setHeader(name,type,exp)": { "index": 75, "kind": "function", "displayName": "Set Header", "group": "function", "label": "function", "required": false, "javaType": "Object", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "Sets a message header with the given expression (optional converting to the given type)", "ognl": false, "suffix": "}" },
+    "setVariable(name,type,exp)": { "index": 76, "kind": "function", "displayName": "Set Variable", "group": "function", "label": "function", "required": false, "javaType": "Object", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "Sets a variable with the given expression (optional converting to the given type)", "ognl": false, "suffix": "}" },
+    "size(exp)": { "index": 77, "kind": "function", "displayName": "Size", "group": "function", "label": "function", "required": false, "javaType": "int", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "The size of the message body (or expression). If the payload is java.util.Collection or java.util.Map based then the size is the number of elements; otherwise the payload size in bytes.", "ognl": false, "suffix": "}" },
+    "skip(num)": { "index": 78, "kind": "function", "displayName": "Skip First Items from the Message Body", "group": "function", "label": "function", "required": false, "javaType": "java.util.Iterator", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "The skip function iterates the message body and skips the first number of items. This can be used with the Splitter EIP to split a message body and skip the first N number of items.", "ognl": false, "suffix": "}" },
+    "split(exp,separator)": { "index": 79, "kind": "function", "displayName": "Split String Values", "group": "function", "label": "function", "required": false, "javaType": "String[]", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "Splits the message body\/expression as a String value using the separator into a String array", "ognl": false, "suffix": "}" },
+    "stepId": { "index": 80, "kind": "function", "displayName": "Step Id", "group": "function", "label": "function", "required": false, "javaType": "String", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "Returns the id of the current step the Exchange is being routed.", "ognl": false, "suffix": "}" },
+    "substring(head,tail)": { "index": 81, "kind": "function", "displayName": "Substring", "group": "function", "label": "function", "required": false, "javaType": "String", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "Returns a substring of the message body\/expression. If only one positive number, then the returned string is clipped from the beginning. If only one negative number, then the returned string is clipped from the beginning. Otherwise the returned string is clipped between the head and tail positions.", "ognl": false, "suffix": "}" },
+    "substringAfter(exp,before)": { "index": 82, "kind": "function", "displayName": "Substring After", "group": "function", "label": "function", "required": false, "javaType": "String", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "Returns a substring of the message body\/expression that comes after. Returns null if nothing comes after.", "ognl": false, "suffix": "}" },
+    "substringBefore(exp,before)": { "index": 83, "kind": "function", "displayName": "Substring Before", "group": "function", "label": "function", "required": false, "javaType": "String", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "Returns a substring of the message body\/expression that comes before. Returns null if nothing comes before.", "ognl": false, "suffix": "}" },
+    "substringBetween(exp,after,before)": { "index": 84, "kind": "function", "displayName": "Substring Between", "group": "function", "label": "function", "required": false, "javaType": "String", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "Returns a substring of the message body\/expression that are between after and before. Returns null if nothing comes between.", "ognl": false, "suffix": "}" },
+    "sum(val...)": { "index": 85, "kind": "function", "displayName": "Calculate Sum Number", "group": "function", "label": "function", "required": false, "javaType": "long", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "Sums together all the values as integral numbers. This function can also be used to subtract by using negative numbers.", "ognl": false, "suffix": "}" },
+    "sys.name": { "index": 86, "kind": "function", "displayName": "JVM System Property", "group": "function", "label": "function", "required": false, "javaType": "Object", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "The JVM system property with the given name", "ognl": false, "suffix": "}" },
+    "threadId": { "index": 87, "kind": "function", "displayName": "Thread Id", "group": "function", "label": "function", "required": false, "javaType": "long", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "Returns the id of the current thread. Can be used for logging.", "ognl": false, "suffix": "}" },
+    "threadName": { "index": 88, "kind": "function", "displayName": "Thread Name", "group": "function", "label": "function", "required": false, "javaType": "String", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "Returns the name of the current thread. Can be used for logging.", "ognl": false, "suffix": "}" },
+    "trim(exp)": { "index": 89, "kind": "function", "displayName": "Trim", "group": "function", "label": "function", "required": false, "javaType": "String", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "The trim function trims the message body (or expression) by removing all leading and trailing white spaces.", "ognl": false, "suffix": "}" },
+    "type:name.field": { "index": 90, "kind": "function", "displayName": "Java Field Value", "group": "function", "label": "function", "required": false, "javaType": "Object", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "To refer to a type or field by its classname. To refer to a field, you can append .FIELD_NAME. For example, you can refer to the constant field from Exchange as: `org.apache.camel.Exchange.FILE_NAME`", "ognl": false, "suffix": "}" },
+    "uppercase(exp)": { "index": 91, "kind": "function", "displayName": "Uppercase", "group": "function", "label": "function", "required": false, "javaType": "String", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "Uppercases the message body (or expression)", "ognl": false, "suffix": "}" },
+    "uuid(type)": { "index": 92, "kind": "function", "displayName": "Generate UUID", "group": "function", "label": "function", "required": false, "javaType": "String", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "Returns a UUID using the Camel `UuidGenerator`. You can choose between `default`, `classic`, `short` and `simple` as the type. If no type is given, the default is used. It is also possible to use a custom `UuidGenerator` and bind the bean to the Registry with an id. For example `${uuid(myGenerator)}` where the ID is _myGenerator_.", "ognl": false, "suffix": "}" },
+    "variable.name": { "index": 93, "kind": "function", "displayName": "Variable", "group": "function", "label": "function", "required": false, "javaType": "Object", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "The variable with the given name", "ognl": true, "suffix": "}" },
+    "variableAs(key,type)": { "index": 94, "kind": "function", "displayName": "Variable As", "group": "function", "label": "function", "required": false, "javaType": "Object", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "Converts the variable to the given type (classname).", "ognl": false, "suffix": "}" },
+    "variables": { "index": 95, "kind": "function", "displayName": "Variables", "group": "function", "label": "function", "required": false, "javaType": "java.util.Map", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "Returns all the variables from the current Exchange in a Map", "ognl": false, "suffix": "}" },
+    "xpath(input,exp)": { "index": 96, "kind": "function", "displayName": "XPath", "group": "function", "label": "function", "required": false, "javaType": "Object", "prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false, "secret": false, "description": "When working with XML data, then this allows using the XPath language, for example, to extract data from the message body (in XML format). This requires having camel-xpath JAR on the classpath. For input (optional), you can choose `header:key`, `exchangeProperty:key` or `variable:key` to use as input for the XML payload instead of the message body.", "ognl": false, "suffix": "}" }
   }
 }
diff --git a/core/camel-core-languages/src/main/docs/modules/languages/pages/simple-language.adoc b/core/camel-core-languages/src/main/docs/modules/languages/pages/simple-language.adoc
index f0d9f7973d8d3..6df8b7ea9dede 100644
--- a/core/camel-core-languages/src/main/docs/modules/languages/pages/simple-language.adoc
+++ b/core/camel-core-languages/src/main/docs/modules/languages/pages/simple-language.adoc
@@ -216,6 +216,7 @@ TIP:
 |`isAlphaNumeric(exp)` | `boolean` | Whether the expression is alphanumeric value (A..Z0-9). For more advanced checks use the `regex` operator.
 |`isNumeric()` | `boolean` | Whether the message body is numeric value (0..9). For more advanced checks use the `regex` operator.
 |`isNumeric(exp)` | `boolean` | Whether the expression is numeric value (0..9). For more advanced checks use the `regex` operator.
+|`not(predicate)` | `boolean` | Evaluates the predicate and returns the opposite.
 |====
 
 === Date & Time Functions
diff --git a/core/camel-core-languages/src/main/java/org/apache/camel/language/csimple/CSimpleHelper.java b/core/camel-core-languages/src/main/java/org/apache/camel/language/csimple/CSimpleHelper.java
index bca7465be1f0a..d4b7caaea8d44 100644
--- a/core/camel-core-languages/src/main/java/org/apache/camel/language/csimple/CSimpleHelper.java
+++ b/core/camel-core-languages/src/main/java/org/apache/camel/language/csimple/CSimpleHelper.java
@@ -1184,4 +1184,28 @@ public static Object setVariable(Exchange exchange, String name, Class<?> type,
         return null;
     }
 
+    public static boolean isNot(Exchange exchange, Object value) {
+        if (value == null) {
+            return true;
+        }
+        if (value instanceof String s) {
+            if (s.isEmpty()) {
+                return true;
+            }
+            if ("false".equalsIgnoreCase(s)) {
+                return true;
+            } else if ("true".equalsIgnoreCase(s)) {
+                return false;
+            } else {
+                return false;
+            }
+        }
+        Boolean b = convertTo(exchange, Boolean.class, value);
+        if (b == null) {
+            return true;
+        } else {
+            return !b;
+        }
+    }
+
 }
diff --git a/core/camel-core-languages/src/main/java/org/apache/camel/language/simple/SimpleConstants.java b/core/camel-core-languages/src/main/java/org/apache/camel/language/simple/SimpleConstants.java
index e3b40c76dd66f..1a83622ae9494 100644
--- a/core/camel-core-languages/src/main/java/org/apache/camel/language/simple/SimpleConstants.java
+++ b/core/camel-core-languages/src/main/java/org/apache/camel/language/simple/SimpleConstants.java
@@ -252,6 +252,9 @@ public final class SimpleConstants {
               label = "function", javaType = "Object", displayName = "Create Empty Object")
     public static final String NEW_EMPTY = "newEmpty(type)";
 
+    @Metadata(description = "Evaluates the predicate and returns the opposite.", label = "function", javaType = "boolean")
+    public static final String NOT = "not";
+
     @Metadata(description = "Represents a null value", label = "function", javaType = "Object")
     public static final String NULL = "null";
 
diff --git a/core/camel-core-languages/src/main/java/org/apache/camel/language/simple/SimpleExpressionBuilder.java b/core/camel-core-languages/src/main/java/org/apache/camel/language/simple/SimpleExpressionBuilder.java
index a6565f7a237e0..1d8c397ab3d8c 100644
--- a/core/camel-core-languages/src/main/java/org/apache/camel/language/simple/SimpleExpressionBuilder.java
+++ b/core/camel-core-languages/src/main/java/org/apache/camel/language/simple/SimpleExpressionBuilder.java
@@ -59,6 +59,7 @@
 import org.apache.camel.support.ShortUuidGenerator;
 import org.apache.camel.support.SimpleUuidGenerator;
 import org.apache.camel.support.builder.ExpressionBuilder;
+import org.apache.camel.support.builder.PredicateBuilder;
 import org.apache.camel.util.FileUtil;
 import org.apache.camel.util.IOHelper;
 import org.apache.camel.util.ObjectHelper;
@@ -557,6 +558,34 @@ public String toString() {
         };
     }
 
+    /**
+     * Returns the opposite result of the predicate
+     */
+    public static Expression isNotPredicate(final String predicate) {
+        return new ExpressionAdapter() {
+            private Predicate pred;
+
+            @Override
+            public void init(CamelContext context) {
+                pred = PredicateBuilder.not(context.resolveLanguage("simple").createPredicate(predicate));
+                pred.init(context);
+            }
+
+            public Object evaluate(Exchange exchange) {
+                return pred.matches(exchange);
+            }
+
+            @Override
+            public String toString() {
+                if (predicate != null) {
+                    return "not(" + predicate + ")";
+                } else {
+                    return "not()";
+                }
+            }
+        };
+    }
+
     /**
      * Trims the given expressions (uses message body if expression is null)
      */
diff --git a/core/camel-core-languages/src/main/java/org/apache/camel/language/simple/ast/SimpleFunctionExpression.java b/core/camel-core-languages/src/main/java/org/apache/camel/language/simple/ast/SimpleFunctionExpression.java
index 2648eca6a3c6b..d28a8b4b173c6 100644
--- a/core/camel-core-languages/src/main/java/org/apache/camel/language/simple/ast/SimpleFunctionExpression.java
+++ b/core/camel-core-languages/src/main/java/org/apache/camel/language/simple/ast/SimpleFunctionExpression.java
@@ -28,6 +28,7 @@
 import org.apache.camel.RuntimeCamelException;
 import org.apache.camel.language.simple.BaseSimpleParser;
 import org.apache.camel.language.simple.SimpleExpressionBuilder;
+import org.apache.camel.language.simple.SimplePredicateParser;
 import org.apache.camel.language.simple.types.SimpleParserException;
 import org.apache.camel.language.simple.types.SimpleToken;
 import org.apache.camel.spi.Language;
@@ -1085,6 +1086,16 @@ private Expression createSimpleExpressionMisc(String function) {
             }
             return SimpleExpressionBuilder.isNumericExpression(exp);
         }
+        // not function
+        remainder = ifStartsWithReturnRemainder("not(", function);
+        if (remainder != null) {
+            String exp = "${body}";
+            String value = StringHelper.beforeLast(remainder, ")");
+            if (ObjectHelper.isNotEmpty(value)) {
+                exp = value;
+            }
+            return SimpleExpressionBuilder.isNotPredicate(exp);
+        }
 
         // trim function
         remainder = ifStartsWithReturnRemainder("trim(", function);
@@ -1654,7 +1665,7 @@ private String doCreateCode(CamelContext camelContext, String expression) throws
         }
 
         // miscellaneous functions
-        String misc = createCodeExpressionMisc(function);
+        String misc = createCodeExpressionMisc(camelContext, function);
         if (misc != null) {
             return misc;
         }
@@ -2314,7 +2325,7 @@ private String createCodeBase64(CamelContext camelContext, String function) {
         return factory.get().createCode(camelContext, function, token.getIndex());
     }
 
-    private String createCodeExpressionMisc(String function) {
+    private String createCodeExpressionMisc(CamelContext camelContext, String function) {
         String remainder;
 
         // setHeader function
@@ -2667,8 +2678,6 @@ private String createCodeExpressionMisc(String function) {
         // pad function
         remainder = ifStartsWithReturnRemainder("pad(", function);
         if (remainder != null) {
-            String exp;
-            String len;
             String separator = null;
             String values = StringHelper.beforeLast(remainder, ")");
             if (values == null || ObjectHelper.isEmpty(values)) {
@@ -2824,6 +2833,25 @@ private String createCodeExpressionMisc(String function) {
             }
             return "Object o = " + exp + ";\n        return isNumeric(exchange, o);";
         }
+        // not function
+        remainder = ifStartsWithReturnRemainder("not(", function);
+        if (remainder != null) {
+            String exp = "body";
+            String values = StringHelper.beforeLast(remainder, ")");
+            if (ObjectHelper.isNotEmpty(values)) {
+                String[] tokens = codeSplitSafe(values, ',', true, true);
+                if (tokens.length != 1) {
+                    throw new SimpleParserException(
+                            "Valid syntax: ${not(exp)} was: " + function, token.getIndex());
+                }
+
+                // Parse the condition as a predicate and generate code
+                SimplePredicateParser predicateParser
+                        = new SimplePredicateParser(camelContext, tokens[0], true, skipFileFunctions, null);
+                exp = predicateParser.parseCode();
+            }
+            return "Object o = " + exp + ";\n        return isNot(exchange, o);";
+        }
 
         // capitalize function
         remainder = ifStartsWithReturnRemainder("capitalize(", function);
diff --git a/core/camel-core/src/test/java/org/apache/camel/language/simple/SimpleTest.java b/core/camel-core/src/test/java/org/apache/camel/language/simple/SimpleTest.java
index 4aece583045ed..2cbf5442cd2d4 100644
--- a/core/camel-core/src/test/java/org/apache/camel/language/simple/SimpleTest.java
+++ b/core/camel-core/src/test/java/org/apache/camel/language/simple/SimpleTest.java
@@ -3417,6 +3417,24 @@ public void testDistinct() {
         assertEquals("[]", s);
     }
 
+    @Test
+    public void testNot() {
+        exchange.getMessage().setBody("");
+        Expression expression = context.resolveLanguage("simple").createExpression("${not()}");
+        assertTrue(expression.evaluate(exchange, Boolean.class));
+
+        exchange.getMessage().setBody("Hello");
+        expression = context.resolveLanguage("simple").createExpression("${not()}");
+        assertFalse(expression.evaluate(exchange, Boolean.class));
+
+        expression = context.resolveLanguage("simple").createExpression("${not(${body} == 'Hello')}");
+        assertFalse(expression.evaluate(exchange, Boolean.class));
+
+        exchange.getMessage().setBody("Bye");
+        expression = context.resolveLanguage("simple").createExpression("${not(${body} == 'Hello')}");
+        assertTrue(expression.evaluate(exchange, Boolean.class));
+    }
+
     @Override
     protected String getLanguageName() {
         return "simple";