Please help us help you and fill where relevant:Your LimeSurvey version: 3.25.17Own server or LimeSurvey hosting: Own serverSurvey theme/template: Vanilla================= have an array question with 6 answer codes, an equation question and a multichoice question in a group.The equation question populates the multichoice question for anyone who doesn't select the 6th answer code.This mutichoice question is then used as an array filter for a single choice question on the next page but it doesn't work.I have attached an LSS export of these 2 pages

A "multiple" question is not coded "Y" / "N", but "Y" / ""
Change the equation.

BTW:
How can some of your items be "not applicable"?
 

Thanks Joffm for your answer, everything works now.
Client decided they wanted the Not applicable option but I've talked them out of it now as it doesn't make sense really.