FIX

src/caosadvancedtools/utils.py

@@ -109,7 +109,7 @@ def return_field_or_property(value, prop=None):
     single value or (in case of dict as value) a value of the dict.
     """
 
-    if isinstance(value, dict) and prop in el:
+    if isinstance(value, dict) and prop in value:
         return value[prop]
     else:
         return value