I am trying to change the conditional visibility of a field based on the answer to another. It is a multiple select questions with domain options of (IP, PH, DH, M, EM, and VM). I want to show Questions02 when IP or DH or M are selected from Question01. I am currently using regex(${Question01}, '(IP|DH|M)') but this will also be true if you select EM or VM in Question01. How do I keep it true if M is selected but not EM or VM?