JumpzVelocity changing with the speed. How to disable it?

Hello… I’m developing a Paper 2D game, and there I have an Intelligent Lift like this: Intelligent Lift

My problem is: When I’m on it, and I jump… my jumpzVelocity is changing because of the speed of the lift… So my character jumps much higher than the normal jump…

I want to disable this, so my character can jump normaly, even with this lift going up.

Thank you!