How to set scrollingbar to match the number of Frame that it has

Hi!

I have problem with how I can set the length of the scrolling frame?

in the picture will show you the frame ends here but to scrolling frame still continue I don’t know how to set length of it can someone tell me?

Thank you! and sorry for bad English

You need to change the CanvasSize same this image


Oh thank you (this is 30 characters text)