Set task to support direct runtime expression

Author: nyamathshaik

dsl-reference.md

@@ -963,7 +963,7 @@ A task used to set data.
 
 | Name | Type | Required | Description |
 |:--|:---:|:---:|:---|
-| set | `object` | `yes` | A name/value mapping of the data to set. |
+| set | `object` | `string` | `yes` | A name/value mapping of the data to set. Can be an object or a direct runtime expression. |
 
 ##### Examples
 
@@ -979,6 +979,8 @@ do:
         shape: circle
         size: ${ .configuration.size }
         fill: ${ .configuration.fill }
+  - setColor:
+      set: ${ .configuration.color }      
 ```
 
 #### Switch

examples/set.yaml

@@ -9,6 +9,10 @@ schedule:
       with:
         type: io.serverlessworkflow.samples.events.trigger.v1
 do: 
-  - initialize:
+  - initializeObject:
       set:
-        startEvent: ${ $workflow.input[0] }
+        startEvent: ${ $workflow.input[0] }
+        status: active
+
+  - initializeString:
+      set: ${ $workflow.input[0] }