Hi all, I am writing a consent form in the beginning of the survey and I want the participants to check two cheekbones. If they don't select both of them, the can't pass page (similar to a force response). I don't want to send them to the end of the survey, I just want to not allow them to pass the page. I have the following html for the two checkboxes.
I have been looking codes on the internet but no-one works for me. Can anyone help me please?
Thank you!
Best answer by rondev
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