I just built a form. one of the fields is a radio button field and the choices are no:0, 1:1, or 2:2. Then there is a form multiplier of the value times 19.00. If the user chooses no, then I get an error when going to paypal. I know it is the zero in the multiplier but I can't figure out how to fix it. Any advise?
Thanks for your help.

I would drop the no option and use a conditional to show the other options if they answer yes to another element.