Im having trouble using the paint tool to paint density or thickness on my cloth object. I get the paintbursh just fine and select my attribute from the pulldown i wish to paint but when i try to paint there is an X over my brush and it paints nothing. is there something i need to do to set this up. i made a cloth object out of a modeled polygon and not from panels or garments if that matters. im thinking there is no way to paint density on a modeled object no?