I woud like to make it so that the top of the skybox is removed/toggled so that it is possible to poceed to the next area.
That is the idea.Yeah, chances are it won't work. Why do you need the skybox brush to be removed once the stage is done? Is it's preserve and illusion that the next area doesn't exist yet? Because otherwise it's probably better to just use player clip or block bullet to serve as an invisible barrier