Circling selections on pdf fillable form

I currently have a PDF fillable form that  selections that are required to be circled .However once the form is submitted I need the to be able to clear the form. I want it to have a red circle when selected then clear when form is cleared. I have created a button to reset the form when cleared and it works but just doesn't clear the circled selection. I have also set up radio buttons for the selections. Below is a script I found online that kind of work but you have to click on the selection to clear the circle.Any assistance would be greatly appreciated.

if (event.target.display == display.visible)

{

event.target.display = display.noPrint;

event.target.borderColor = color.transparent;

resetForm(event.target.name);

}

else

{

event.target.display = display.visible;

resetForm(event.target.name);

event.target.borderColor = color.black;

}

Thanks,

Tim