I have survey that creates test request forms and I want to select answers from a select_multiple question based on the answer of a select_one question. The formula I'm using is from an existing post and is laid out like this: if(selected(${test_req},'DOT'),'UrineLab,OralRapid,',")
When I save the file, I get a "couldn't understand the expression starting at this point: ...ab,OralRapid"
I have attached the source file for review.