Hi Guys

I am stuck with what may be a newbie question...

My organization uses two differents types of Account: "ship_to" and "bill_to" accounts. Each ship_to account is necessarly linked (with the hierarchy tree) to a bill_to account. So there is a parent-child relationship.

For each account (either bill_to or ship_to) there is a field with number values - let's call it "Number of cars".

==> Now I would like to summarize the number of cars for a same customer, which means I need to sum the field "Number of cars" for the parent.account and ALL the child accounds. The sum would be displayed in the parent.account page layout.

How could I do?

Thx

Tristan