Animation Blueprint receives value and then resets them, cannot keep and use the values.

Hi everyone, I am trying to animate individual bones of an skeletoon mesh, from an actor blueprint. So this happens:

I get the value from the Actor blueprint, but that value is reset allmost instantly, so I cannot use it, as you can see in the pictures I am sending.

How can I make to move the bones from the actor blueprint? I can get the bone names and info, but not chagne it from the Actor blueprint, only from inside the Animation blueprint.

​​​​​​​Thank you !!!