How to query a record type and a related record type and use it for context in a related record action

I am assuming that the answer parameter accepts fields that you are passing in the querySelection. If yes, then why are you trying to index the answer field again towards the end of the query? For more assistance, can you please show the expression and also the type of rule inputs you have created on your interface?

I was indexing again because it was the only way the rule would return what I need it to return. 

Here is the rulehttps://www.screencast.com/t/SMywWOmcW5y

Here is the interface rule inputs (question and answer are CDTs) https://www.screencast.com/t/YUMEUTy3V7e

Here is the process variables for the process model (question and answer are also CDTs) https://www.screencast.com/t/ljRzNtBJ

Thank you, Harshit

They look like CDTs and not records. Because in another screenshot you have added, the name of the "Answer" record looks different. 


In addition to that, you haven't passed any value in "relatedRecordData' RI of the expression because of which you are not able to query data from the related record (Answer) while trying to fetch it from the data subset of Main record (FAQ)

I am able to retrieve the data I need from the Answer but it is not attaching on the interface. Just edited the rule, and added RelatedRecordData and not getting this Error: An Error Has Occurred Could not cast from Text to TFAQA_Answer. Details: CastInvalid

I am able to retrieve the data I need from the Answer but it is not attaching on the interface. Just edited the rule, and added RelatedRecordData and not getting this Error: An Error Has Occurred Could not cast from Text to TFAQA_Answer. Details: CastInvalid