The idea is that a DynamicPhysicsVolume is off by default, and they I use the Modify Property action to turn it on. The Modify Property action works, which I can test using the Get Property action, however, changing it seems to have no effect. If the volume starts off as enabled, I can't disable it and vice versa. The variable I'm trying to modify is the bEnabled variable. I've achieved what I wanted by disabling the touch event and then turning it on with a toggle, however I would like to understand why changing this variable doesn't achieve the same effect. Thanks.