I have a form with two option groups in it. the results of the option button in these groups (three apiece) gets sent back to a table. my goal is to not allow a user to advance to the next page of the form unless a button is selected from both option groups. i have tried required fields in the table properties but it does not seem to work for me. i was then thinking it may need some expression typed somewhere that if this is "this" then this must be either "this". something along those lines...