I need to define the path of the slider’s knob ( on the left side. ) by setting up a range in a math TOP (on the right side). The right side is the child of the left slider comp. Math TOP is inside the slider COMP. If you look at my expression for torange 2, you can see I want my knob does not disappear at the end of the slider. However, the slider on the left didn’t work that way. Please help me to solve the problem.