Problem with my ladder blueprint

Hi.
Well, this days I’ve been scripting a ladder blueprint, but I cant do it work. This is the trouble:
When I press “E” the character goes to the top of the ladder (automatically with a timeline and the lerp function). But, when it reaches the top of the ladder, goes again at the starting position. I tried deactivating the gravity, but that wasnt the problem (I thought that the character was falling x’D). So, I expect that you help me haha.

Thank you.

Meaning of the variables (English isnt my language):

-Personaje: Character.

-Arriba: Up.

-Abajo: Down.

-Posicion Inicial: Initial position.

-Posicion final: Final position.

-Estoy Abajo: ImDown.

-Movimiento: Movement.