At presnt, an action/trigger requires you to specify an AR Form Mapping. I have had a number of requirements where my customer would like to present a customer with one (or more) selection questions and then based on their answer push various values to other questions - which may be visible or hidden from the user.
Currently, it is not possible without mapping the questions to an AR form and quering the AR Form. Instead, the action should be configured simply with:
Trigger: Question 1 = "value1" (freetext) AND Question 2 = "value2" (freetext)
Action: Set Question 3 = "value3" (freetext)
There is no need for an AR Form in the above scenario.