I have a curtain wall family nested within a curtain wall family. Mullions wont schedule this way. Thought maybe I could get the same answer if I used a Calculated Value. I tried to multiply (H*2)+(W*2) and I got "Inconsistant Values". I tired it with and without ( ). I tried simply Height*2 and still got the same error.
Anyone got a better idea or know what I did wrong? Thank you.