manipulating frame url by script

[Gadjoken]

Hello,

I had also tested this script but nothing helped the url always remains the one I entered manually and is not updated based on the subject.

Code:

$(function(){
  if (typeof grp != 'undefined') {
    grp.listen('34/1/1', function(object, state) {
      var URL= grp.listen('34/1/1');
      $('.testurl').find('iframe').attr('src', URL)
    }, true);
  }
});

<div class="item testurl item-iframe" style="top: -1px; left: -1px; z-index: 10; width: 1025px; height: 769px;"><iframe border="0" frameborder="0" width="1025" height="769" src="https://xxxxxx"></iframe></div>
This is what I get when I inspect the iframe

I have also tried on several browsers.
B.R.