Collision on a organic shape

Been pulling my hair out trying to get working collision detection on a maze game i’m working on and so far i have been unable to do it (file attached) I’ve looked at tones of tutorials and forums but I still can’t find a way to get my actor to react to my maze walls.

any ideas

Notes:
nested movie clip maze.walls is well the nested movie of the maze
tswalk is the player

https://skydrive.live.com/redir.aspx?cid=ed2dfe04a3ee0df8&resid=ED2DFE04A3EE0DF8!117&parid=ED2DFE04A3EE0DF8!103