I want to set up an expression so that if a door has a specific manufacturer, the door leaf thickness shows as "--" on our door schedule. I am brand new to using the expression editor, but no matter what I try, I can't get an expression that will let me replace this unit with text. Is this possible, or can you not replace the door/height/thickness for only some doors on just the door schedule?
Operating system used: Windows Windows 11 Pro
