How do you put the total quantity of welded mechanics in a bill of materials for an assembly?

Hello

On my nomenclature of an assembly, I would like to show all my welded mechanics, their length and the total quantity.

I manage to have my mechanics welded, the length but not the total quantity. I have the total quantity of the parts (on my example the total quantity of the right foot 7 is 6 on the other hand all the welded mechanics of this part are not multiplied by 6. How can we get the total quantity?

Thank you in advance.


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