How to attach a static mesh to bsp?
In order to understand this issue I would like some more information from you.
1.) What exactly do you mean by attach?
2.) Do you want to have a static mesh follow a bsp and never move?
3.) Do you want to attach a static mesh so that the static mesh is animated?
With more context I will be able to understand what you are trying to achieve.
Due to inactivity and tracking purposes I will be marking this thread as answered.