Invoice auto numbering
I try to modify the invoicing module from starter solution. Now the invoice number is only "1, 2, 3...8, 9...". I wish to get auto generated (serial number) in three places.
The serial number is XX (it should be restartable every month)
The auto generated month number is MM and
automaticaly generated year is YYYY.
The whole invioce number should look like this: XX/MM/YYYY - how to make this thing work?