Checkbox/radio button= yes/no choice, but still enable to undo/zero set made yes/no choice

Hi,

I'm trying to make the following to work in my pdf form:

I want to make it possbile for the user to answer a question by simple “yes” or “no” choice by checking checkboxes or radio buttons.

So only one choice is possible but, however, in this case I also want the user to be enabled to undo/zero set the made “yes” or “no” choice.

(I want the user to be enabled to: answer “yes” or “no” by mistake, then undo/zero set the made “yes” or “no”, and instead be enabled to write a more appropriate answer in a adjacent textbox).

The radio buttons does half the job, but still, a made choice can’t be undone/zero set.

How can I do to make this work?

(suppose I need a javascript for this)

Appreciate your help on this.

Best regards,

Dennis