How do you make Torso and Head Non-collidable?

I have asked a few scripter friends of mine, and have not had a decent answer to the question. This code:

Workspace.WiseDumbledore.Torso.CanCollide = false
Workspace.WiseDumbledore.Head.CanCollide = false

Does not work. The only response that I have had was either "I don't know" or they refuse to believe me that this works. Also, the noclip script collides with other people in-game. I would like the script to not collide with people in game.

Thanks -WiseDumbledore

This doesn't work because the Humanoid object prevents these changes to actually take effect. If you want your players to be "ghosts", you can either use local parts and make the parts not collidable client-side, or create a pseudocharacter.