Make the ball passing through a hole

Hi everyone!
Im new here, and im trying to do a different version of the tutorial Roll a Ball.
My problem is that im trying to do kind of a circuit for the ball and i want the ball to pass on the hole…
but he ignores the hole, he acts like is another plane…i added the mesh collider on the imported file created from Maya…
Please somebody help me to achieve this, cause i maybe need to do different pieces on Maya or something…dont no.

Im gonna put the image here…hope u can see it.

Have a good day for u all!
Pedro Bandeira

hi ;
u should attach a Rigidbody Component and a MeshCollider Component ;
but not to the parent of your object;
go search throgh the childs and see wich one has meshfilter and meshrenderer component ;
attach and i think u should be good to go ;