Making UI button to scale in scrolling frame

I’m trying to set scale of button that’s inside of scrolling frame so it can be same size in any device. but as scrolling frame can extend canvas size, I need to make it same if canvas size changes. How can I do this?

when canvas size is 2:

when canvas size is 5:

they have to be same size even canvas size changed.

Have you tried to add UIAspectRatioConstraint to the children of the ScrollingFrame?