I want to add a feature to my game where the character has a gap to far to jump. I want to have a platform in the middle of the gap for the character to jump on to. Although, I don't want to have the platform there all the time. I want it to flash off and on. Every time it flashes off, I want the solid to be not solid, and every time it flashes on, I want the solid to be solid. Any ideas?