Radio buttons in extended form not recording

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Hi,
I'm new to Concrete5, and I really need some help! I made an extended form so people could register for an event online. I had 3 sets of radio buttons included so people could choose which workshops they wished to attend. Everything works fine, but when I looked at the reports, the radio buttons for the workshops wasn't included in the report. Did I do something wrong, or how can I view which button people clicked??