I would like to be able to hatch walls that land on a floor while shading walls below with a different hatch. I created the attached files with Revit but had to use filled regions to get the shading to work. I have been messing with the materials trying to get the walls above when cut to show the hatch pattern while the walls below would get a different hatch pattern. They are the same wall type. Basically what I am trying to do indicate graphically the structural walls above and below a floor. The structural walls above a floor would get one type of hatch while the structural walls below a floor would get different hatch pattern. The non-structural walls would be drawn with out any hatch. What can I do to accomplish this with out having to draw hatches by hand.