How to and costume parameter Volume_m3 or other Quantities

[jaka.senekovic761022]

Hy, I am trying rely hard to add Volume to family type property set group.

I can not get the Volume quantity?
Has some one a video or can help me?

[david_peterson]

Make a new parameter called Vol or whatever. Then use a formula for = Width * Thickness * Depth.

If you're just trying to get in a schedule in your revit project, you can use a calculated value parameter in the schedule.