Catching None exeption in funcions

Author: eiglesias34

README.md

@@ -84,7 +84,7 @@ You can easily customize your own configurations from the set of features that S
 
 ## Version 
 ```
-4.7.5.12.12
+4.7.5.12.13
 ```
 
 ## RML-Test Cases

VERSION

@@ -1 +1 @@
-4.7.5.12.12
+4.7.5.12.13

rdfizer/rdfizer/fnml_functions.py

@@ -63,7 +63,10 @@ def isNull():
 
 def trueCondition():
     if bool(global_dic["strBoolean"]):
-        return str(global_dic["str"])
+        if "None" != str(global_dic["str"]):
+            return str(global_dic["str"])
+        else:
+            return None
     else:
         return None
 
@@ -87,12 +90,18 @@ def string_md5():
 def controls_if():
     if bool(global_dic["bool_b"]):
         if "any_true" in global_dic:
-            return str(global_dic["any_true"])
+            if "None" == str(global_dic["any_true"]):
+                return None
+            else:
+                return str(global_dic["any_true"])
         else:
             return None
     else:
         if "any_false" in global_dic:
-            return str(global_dic["any_false"])
+            if "None" == str(global_dic["any_false"]):
+                return None
+            else:
+                return str(global_dic["any_false"])
         else:
             return None