Hi I'm sorry for my english but i need help.

My problem is

I create "Sales order" with "contracts" (invoice from timesheet) and I confirm sale. Project is create automatically with tasks (from sales order) I creates invoice from Project timesheet but if invoice is confirm and pay, sales order is not done (pay is not checked) how to make an invoice from timesheet. Sales Order must be done.

OPENERP 7 PLEASE STEEP BY STEEP

IF YOU UNDERSTAND WHAT IS IT PLEASE HELP

VERY VERY VERY THANK YOU FOR ANY ANSWER

DAMIAN