How to synchronize climbing speed with animation? [Blueprint]

I have created a simple ladder in UE4 with an appropriate climbing animation for my characater.
The problem is that i dont know how to synchronize the animation with the climbing speed of the player.

Unfortunately i am getting following result:

This image shows the player when he starts climbing.

And this happens if the player is climbing up.

So basically if the player hits W in climbing mode the character adds the climbing speed to his world location on the z-axis and plays the climbing animation. This works fine but the animation is either too slow or too fast.

I hope somebody can give me some clues how to do it,

Additional information:

Animation length: 40 Frames

Distance between ladder steps: 40 decimeter (Blender)