I'm working on this job where I have to use the Primatte Keyer. In Keylight there is a feature where I can use AE garbage masks to fill a hole in the key. They call it inside or outside mask. I can't find any similar function in Primatte. I know I can use a regular mask to mask out the outside but what about plugging in a hole in primatte with one? how do you do it? Thank you.