Invoice (Report)+ Numbers+problem

[Ivan Palèiæ]

Hi
i need to make an invoice(report) with numbers (like 1/04, 2/04...) but each
Customer must have invoice starting with 1/04 referring to the date they
must pay.

An example
Customer: Something
MustPay_Date: 27/06
Invoice_NR: 01/04
following
MustPay_Date: 30/06
Invoice_NR: 02/04
but
Customer: Something Else
MustPay_Date: 27/06
Invoice_NR: 01/04

Any sugestiones about the expression solving this problem?
many thanks

 

[gnoy]

you can use some other info
eg: Cust.id & 01/04