Problem elevator

Hi! I have a problem with the physics of Unreal 4.
im trying to make a simple elevator. I Only have a Static Mesh and a blueprint that makes the actor change from Z position.
If I activate it with trigger, it’s all good.
But If I put the trigger on top of the platform and my character activates it by uploading it, it gets stuck, makes a rebound and bugs
Any idea how to fix the problem? Thank you