>Hi Nick,
> I did try that way by having another parameterized view for parent table. Every time I access to one record(on the form) I got to enter 2 times the same order number. Is this "odd" for the users? I hope that I will find a way to enter 1 time(1 order number) for both parent and child record. If so, I will tell you.
> Thank you so much for your help, Nick.
> Hobby.

You can use ?orderview.order_number as a parameter for the items view. That way it will not ask twice.

Nick