Disable form field

Hi there,

I hope you are doing well and can help me with the following issue:

I am trying to disable a form field so it cannot be edited manually – so i tried this code as mu-plugin:

<?php

add_action( 'wp_footer', function(){ ?>
	<script>
	(function($){
		$(function(){
			$(document).on("after.load.forminator", function(e, id){
			    jQuery('#forminator-module-2284 #forminator-field-text-9').prop("disabled", true );
jQuery('#forminator-module-2284 #forminator-field-text-10').prop("disabled", true );
										 });
     });
	})(window.jQuery);
		 </script>
	 <?php }, 21); ?>

I got this code from here: https://ww.wp.xz.cn/support/topic/disabled-fields-2/

I deleted:

jQuery('#forminator-module-2284 #forminator-field-text-9').prop("disabled", true );

and replaced in the 2nd jQuery ‘2284’ with my form-ID and ‘text-10’ with my field-ID, which is ‘address-3’.

However, I couldn’t get any results yet – Am I doing something wrong?

Thanks a lot in advance and kind regards