Changes in value of hidden input elements don’t automatically fire the .change() event. So, whenever you set the value of any hidden input element & want the change to be tracked, you explicitly have to tell jQuery to trigger change event on that hidden input element.
function changeStatus(statusValue) {
$('#status').val(statusValue).trigger('change');
}
…. and then …
$('#status').change(function(){
... Perform some function on change of value ...
})
From Code to Cloud 
Thanks for sharing this, probably saved me a good couple hours of headaches : )