如何在ajax成功中改变JS Popover的内容

I want to change the content inside the pop-up box , that is created using bootstrap popover plugin[data-popover] on ajax success.

On page load , the popover content of an element is set default inside "title" attribute. But my challenge here is "to change the popover content in success response of an ajax call " , Ajax call is initiated on click event of an element

On page load , the popover content of an element is set default inside "title" attribute.

<span class=" priority " id="p_over" data-toggle="popover" data-placement="top" data-html="true" data-trigger="hover" title="<center>Priority </center>" target="_blank"></span>

On click enent:

 $(document).on('click', '.priority', function(){

    $.ajax({
        type: "post",
        url: myurl
        data: mydata
        success: function (data) {

            $("#p_over").removeClass("priority");
            $("#p_over").addClass("normal");
            if($('.popover').hasClass('in')){
                $(this).popover('hide');
            }
            else
            {
                $(this).attr('title','Cannot proceed with Save while Editing a row.');
                $(this).popover('show');
            } 

        }
    }); 
}); 

I expect the content change inside the popover in ajax success of of onclick event of a span element