So, I've got a composite shot, and I want a laser to fire "behind" my actor. I created a plane, added the Animated Laser effect to it, and then tried to mask out the part of the laser that was obscured by the actor... and nothing happened. The mask drew properly, but didn't have any effect on the... effect. I tried inverting the mask and the Subtract render mode, but nothing worked.
Is this possible? I'm using HF3 Professional.