LimeSurvey Exclusivity workaround for multi dimensional multiple choice questions

gistfile1.js

<script type="text/javascript" charset="utf-8">
  $(document).ready(function() {
    var arrExclusive = ["A5", "A6"];
    for	(index = 0; index < arrExclusive.length; index++) {
    
      $('input[type="checkbox"][name$="'+arrExclusive[index]+'"]').change(function(event) {
        var objClicked = this;
  
        var clicked = $(this).attr('name').substr(0,$(this).attr('name').length-2);
  
  			$('input[type="checkbox"][name^="'+clicked+'"]').each(function() {
  				if (this != objClicked) {
  					$(this).attr("disabled", !$(this).attr("disabled"));
  					$(this).attr('checked',false);
  				}
  			})
     	});
    }
  });

</script>