radios-to-slider | jquery plugin to create a slider | Plugin library

I have utilised radios-to-slider plugin to convert a group of radio buttons to a slider bar. Here is the plugin I have used here to create this feature http://rubentd.com/radios-to-slider/ . This plugin works like a charm. I am interested to know which event handler I should use to load a function into radio converted slider buttons. I tried using onclick(), onslide(), onmouseover() as well. But little to no luck in loading a function. Could you please suggest which event handler can I make use of to load function to the radio buttons.

previous version:

onchange() event was working well when I called the function using below set of code