Hello everyone.
I started in Bills of Materials Management (BOM).
To do this, I therefore created a sub-table allowing me to link content (Lists of constituent Products) to an article (Parent product).
While I was there I also planned a calculation of the cost of this nomenclature.

What I would like now is to inject into a formula field the sum of the costs.

And there I get stuck. Could someone help me?

Thank you in advance and have a good day everyone.