I WILL GIVE OUT A BRAINLIEST!!

If I were to change the height of the ramp multiple times then the distance the cup moves will change because.............????

Please help!! This is my hypothesis for a potential energy/ kinetic energy assignment. I had to get a cup with a hole, a ruler, a wooden block, and marble, and try to change the distance the cup moved. I really need help, would help out a ton if I can get answers, thanks!!!