How to add collision to complex model like stairs if i added box or any other type of collision it dont work plz tell how to add custom collision

No, the settings of the ramp - the rotated box @JodieKitten suggested you use - inside the actor. It’s literally just this: [image] You can also do it in the asset editor instead; this way the collision is already associated with the asset: [image] Or use complex collision: [image] Or use …