Hi Paul, below is the JS code to accomplish what you want. You should be able to copy this directly into the JS window. I assumed you would want the Section to be read only at form load, and they could use the radio button to make it readable or set it back to read only.

This can be made a little more readable if you use CSS by adding a class to the radio field "ie:radio" and the Section to "SectRO" and then change those values in the code

#q30 would become .SectRO and #q19 would become .radio

Hope this gets you where you need to be

Steve

$(document).ready(function() {

//this sets the section to read only at form load  
  $('#q30 input').attr('readonly', true);
  
//this runs when the radio button is selected
  $('#q19 input').change(function(){
  
    if ($('#q19 input:checked').val() == "No")

//if the radio value is no, set field to read only
    {
    $('#q30 input').attr('readonly', true);
    }

    else 
//if the radio value selected was not no, set the section to be read 
      
      $('#q30 input').attr('readonly', false); 
   
  }); 
});