In my map the place where the player has to place the statue is different from the wall that will be moving. Since they are two separate static meshes (Blueprints), one has the Trigger and the other one has the Mover.
How could I send a reference of the Mover to the blueprint with the Trigger so I can set it at BeginPlay?
EDIT: Apparently Sam makes a tutorial for how to link two static meshes in “Level Polish”, right at the end of this CryptRaider section. So problem solved.