Help with unity Bolt

Hey guys, I need a little help. I started to do this Platformer project and I have an issue with animating the jump.

I followed the unity tutorial, but without the given assets.

This is how my Animator and flow Graphs look like:

I really hope someone has knowledge using Bolt and can help me. I could leave the jump like it is, but I really want to solve the problem and to learn how to fix it and why there was a problem.

See you starside: Zane