How to check if my vehicle touches the ground?

Hello,

i’m a total beginer with UE4 and right now im playing with some physiks and movements of vehicle. I tried to let the vehicle jump which worked pretty well. Now i want it only to jump when it’s on the ground. I found a function calles IsMovingOnGround, but somehow the result is always false. I temporary solved it with using a delay but that’s not the best way to do it.

This is the blueprint where i used it:

Hope you guys can help me there.

Thank you !

buuummmmmp

Did you ever get this figure out?