InDesign checkbox appearance in Acrobat
I am trying to do a questionnaire in InDesign, with multiple choice questions. I want the user to be able to see if the answer they selected is correct or not once they clicked, and so I want to use the check sign and the X sign as such:

But when I export it to PDF the automatic checkbox is select instead:

What is the point of changing the appearance of a checkbox if is not going to be exported to PDF?
Is there any way that checkbox will not appear? I have been trying everything! a button wouldn't work because I need the appearance to stay. The radio button also does not work because there are several correct answers.
Thank you!!
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