Casting Issue on dataset

Question

Hi, 
 
 I am trying to pass one dataset in appyComponent() to another interface and trying to filter that database on some conditions. 
 
 But getting below error. 
 
 local!dataset: index(ri!fulldatasubset,wherecontains(ri!testName[ri!index],ri!fulldatasubset.data.testName)), local!datasubset: todatasubset( local!dataset.data, local!gridSelection.pagingInfo ), 
 Error :

Could not display interface. Please check definition and inputs.

Interface Definition: Expression evaluation error at function 'wherecontains' parameter 2 [line 39]: Invalid index: Cannot index property 'data' of type Text into type "(fulldatasubset)Type of Dataset". 
 
 Can someone help me on this what can i do on this ??

lucasj · Answer

When using wherecontains(), you can only compare data of the same type. My recommendation would be to cast the ri!fulldatasubset.data.testName into type Text using the tostring() function