Director 11 - Camera problem

Hi Everyone,

im new in director and i am very good in 3d max,

i have a scene modeled in 3d max and now i import it inside director using the 3d max w3d exporter, the scene is a villa, with some rooms, walls, etc…

i created a dolly camera and i also placed all the triggers, everything works fine, but the only thing that i dont like is that my camera goes thru the walls and it does not stop,

i am not sure what should i do to make it stop when it is collided with the wall

im using Director 11

please can any one help?