I would like to add a wall height variable in the name of something that I could just key in the variable slot, and then it would automatically populate in the name of the item. The spacing varibale is in the formula so it shows up under variables, but I can't figure out how to get wall height to show up since its not in the actual formula.

did you select a linear with wall height at the takeoff level? it wont work on flat linear
ive come across something similar before i was trying to use a variable somewhere other than in my calculation formula I eventually added a ([variablename]-[variablename])
Thank you; I forgot to select linear with wall hieght at takeoff level.