Mesh collision problem

I used the create static mesh option on the box from Geometry.The mesh will have collision set to default,but for some reasons it won`t add collision.I changed it in all possible ways.What can I do?

Can you show the green outlined collision in the Mesh Editor, all the collision settings in the Mesh and the character? If you provide all information, it should be easy to find the culprit <3

Since you didn’t show the green outlined collision in the Mesh Editor, I assume you don’t know what I mean. The BSP tools don’t generate collision by default (because if you are adding and subtracting from a box, collision get too complex and that’s why you have to add collision manually). To do so, just open the saved mesh and generate a box collision like so: