Matlab Unreal Engine Interface No Collisions

Hello I’m a bit new to UE I’ve tried to connect Matlab with UE (worked fine). Now I wanted to create a custom scene. I can load them simulate it but all the objects in the scene cant force a collsion… I tried to set new collision boxes, switched some physics and collision parameters but still same result. I also tried to set 3d Sim Actors but nothing works it seems like a Example (DoubleLaneChange) gets loaded and it interacts with this objects but ignores my new obejcts. I even tried to set some RoadRunner Materials but still same and even if I try the Matlab Examples the car is bugging around and somehow trough the ground and other objects. It also seems that I have some collision with vehicles but they ignore the collision box and just collide in a weird way. Also changing the PassangerVehicleBP brings no results. Would be super nice if someone has an idea or solution to this problem.