[SOLVED] Character Controller Collision

Hi,

I want my characters to pass through each other.

now i do;

//for player:
desc.mCollisionMask = (Walls << 1);
mPC->getShape(0)->setGroup(Player);


//for NPCs;
desc.mCollisionMask = (Walls << 1);
mNPC->getShape(0)->setGroup(NPC);

ideally they should only collide with walls.

what am i doing wrong?

solution:

setInteractionFlag(NxOgre::Enums::CharacterControllerInteractionFlag_Exclude);

there are so many collision flags in physx. it is maddening

Does anyone know how to disable collision between two AnimaterCharacters?
they bump each other and ruining my path finding algorithm