Follow Spline problem

[Fusion]

Does anyone know what is wrong. I created a spline in Modeler on one layer an object on the second, third and fourth layer (simple boxes). I tried to get them to follow the spline path in layout delaying each one however, it didn't work quite right. I started the animation for the the first box at 0 and ended it at 200. The second I started at 20 and ended it at 220. The third started at 40 and ended at 240. The problem was that when the second box began its animation, it started at the same spot the first box had already made it to. The third box did the same.

Am I missing something that needs to be unchecked or checked somewhere?