Oculus Integration v 12 jump bug

Hi, i'm beginner on unity and Vr and i try to call jump method in OVRPlayerControlller. I jump but immediately down again. I change the jump force, isn't the prob. I found this line 274:

"MoveThrottle.y = (MoveThrottle.y > 0.0f) ? (MoveThrottle.y / motorDamp) : MoveThrottle.y;"

It's the prob but i didn't know how to fix it properly.
If someone know the prob, thank you.