Resetting Radio Box Within Question

I have chosen to put individual questions into chapters rather than using tests. I figured out how to use variables to show correct and incorrect feedback. I use a "try again" button to run a group to reset the question. Prblem is that the radio buttons remain checked after the reset. I tried resetting all variables and modifying Q_000# varaible to 0 (and space too). Nothing works. Any other ideas?Holly

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