I cannot get filtered Collison to work

Hello,

I must have been through a dozen tutorials and posts and I cannot get collision to work the way I want it to.

All I am trying to do is set up two walls and have a NPC able to walk through those walls but have them prevent the first person player from walking through those same walls.

The NPC is set up this way:

As you can see I added a new collision object called Wall Block

The first person character is set up this way:


So he just has the default setting of Pawn.

This is the blocking wall:

This does not work. Both the NPC and Player character are blocked by the wall.

Why does the wall block the NPC when it is set to an object type of wallblock and the wall has wallblock objects set to ignore.

Thanks for your help,

Arthur