Expression evaluation error at function 'contains' parameter 1 [line 986]: Invalid index: Cannot index property 'value' of type String into type List of Variant. Please help

Question

Abhay Dalsaniya · Answer

The forEach expressions returns more than one value and the " value" property expects a single value. If you mean to use this expression for choiceValue instead of value, then it should work.

aditya007 · Answer

Wrap the first parameter in tostring function and add property function to fetch the value (parameter/column)

Nicole Walter · Answer

Hi! I've looked over your code and it seems like the issue is that your local!towerPopulate variable is not properly typed. Appian is compiling it as a "list of variant", which means that it likely contains your data but the data is set as a list of dfferent values instead of a list the relevant CDT or Map. 
 So in your case, it seems like you expect local!towerPopulate to contain the key "value", so I would change your code to index into the local variable at the appropriate key, and cast it to a string. 
 As a result, your code should look like this: 
 reject(
 fn!isnull,
 a!foreach(
 items: touniformstring(local!currentTowerOwner),
 expression: if(
 contains(
 tostring(
 index(
 local!towerPopulate,
 "value",
 ""
 )
 ),
 touniformstring(fv!item)
 ),
 fv!item,
 {}
 )
 )
) 
 Please let me know if this doesn't work or if you have any further questions!