Hello, I just want to ask on how to record journal entry/items of a new field in customer invoice. I added a new field in invoice line, i want that field to have a journal entry/items. In account.invoice py there is a method name action_move_create that is used for making journal entry/items. But i don't know how to make another code for my new field. My field is discount by amount(discount_amount) and every time they put data on it,it should have a a certain account that will record all discount_amount that is made. Please help me..