Dynamic xml text with scrolling?

Hello everyone,

I have created a file which contains some dynamic text fields which load an xml file.
One of these text fields will be multiline,so I can add a lot of text.The instance name of the text field is “content_txt”.I want it to be scrollable.I have also created the scrollbar,which won’t have arrows.It will be a single dragger,and I have called it “ScrollBar”
Is it possible to point the scrollbar in the dynamic xml text so it can be scrollable?

Thanks in advance(-: