Need to scroll en external text

Hello, I am new here and I have been creating my first web design using Edge.

I have finished the design, now I need to add some content.

The way I would prefer to do it is by calling it from external files, in this case it is to a screen inside Edge.

I can call the file, the problem is that the file is bigger than the area I want it to show so I thought about a scroller. The element area size is 904px width x 410px height

I have tried adding one but with no luck . I am using NiceScroll3

http://areaaperta.com/nicescroll/

This is what I have on Stage:

This is how I call the external file

$.ajax({

            url : "http://mywebsite.com/bio.html",

            success : function (data) {

               sym.$("#Stage_MainGroup2_MenuMaster_ScreenBio2_ScreenBio").html(data) ;

            }

        });

ScreenBio is an element inside ScreenBio2 that is a symbol, MenuMaster is symbol and MainGroup2 too

I do not know how to call the scrolling funtion or if it is possible, can you please help me with this?

Thank you so much for your support!