Range Slider for nintex form

Hi,

I am trying to create a multi-handle range slider on a nintex form. So far I am able to create one with a single handle using the following script:

NWF$(document).ready(function () {
NWF$('#' + varCC).attr({type:"range", min:0, max:6, value:3});
});

I am using a single line text control on the form. Can anyone shed some light on how I should get the second handle to work?