I posted a question, but it don't seems to be stored, so I repet it.

We have a number of modules like 1)Client 2)Product 3)Sales order etc.

In Product we have the field "Commission"  as a percentage

In Sales order we have the field "Amount"

I would like a new filed as a formula of commission * amount / 100, in the sales order module, calculated on the time of store record in sales order.

Is this possible?