weldment cutlist

Hi All,

I forgot something. I use to get " purchased BOM" for a welded assembly. Can somebody help me how to to that?

Of course, I get a detailed cut list, but I wanted " full stock length " or total quantity of the steel from the BOM table. There used to be  trick to get that which I forgot. For example, I would need the the total length of L Angle 2 x 2 from an assembly (purchase quantity). I am doing an addition math to get it now. Please help here. Thank you.