Help With Collider in VR enviroment

[LoFra]

Hey guys im really new, i really need a hand, I have this model of a stomach I have like a Caparace from the stomach that is this

and the interior i have a player who can fly all acropss the scenario, but i just want to enter in the stomach, y try to add a capsule colider but it doesnt me enter in te stomach, and i want a collider only for the caparece of the stomach so i can eneter into the stomach and cannot cross out of it, sorry for my bad english, the model is created on Blender, i really need help

[Incode]

Hi, try attaching a mesh collider component to the stomach model. Click on the stomach model → click the Add Component button, and add search for a mesh collider.