[Zax]

I recently used this tutorial and it works:
https://wow.gamepedia.com/Making_a_s...lFrameTemplate

Though I had to replace:

FauxScrollFrame_Update(MyModScrollBar,50,5,16);

with

FauxScrollFrame_Update(MyModScrollBar,50,5,16, nil, nil, nil, nil, nil, nil, true);