Hole in model but ragdoll won't go through (blender)

I have recently made a model in blender with a hole in it, but when ever I try to fit any part of the ragdoll through, it acts like the rest of the model! Any help?

Your physics mesh doesnt have it and/or you didn’t make the compiler specifically compile your model as concave, not convex.

This is wrong section for developer questions as well, go to the modelling forum for all modelling questions. ( Please tell me how this was not obvious )

oh ok sorry. Thanks!