My Tool gun does not seem to work on Team Fortress 2 ragdolls.

Someone Please Help Me!

when i use face poser or finger poser on the tf2 ragdoll, nothing happens! there is a orange/yellow circle around the ragdolls face, BUT the expression never changes! i try to make him angry, nothing happens. or i try to make his fingers move to but it never works. PLEASE HELP ME!