Its really bugging me as i want to set the meshes visibility when the matinee for it is over, (Level blueprint)
Select the matinee actor, then in the level blueprint.
Right Click and select Add controller for matinee (selected matinee)
Then it will create a controller node with a default finished event.
Reference : Modifying Blueprint Properties with Matinee | Unreal Engine Documentation
Omg thank you so much. It worked. You just broadened my horizon of possibilities!! 