Thanks....

but in my game i used initgridsystem
and i add a path and check the player to move in every node in the path
but i need to make unwalkable area (for example barracks house)
i put this code
ai.setgridweight(512, barracksposition.x , barracksposition.z)
and nothing happen when i move the player , the player move throug it

can i send you my example in a message to check it out , its (C#.net and TV3D6.5)