>I don't understand your request. One minute you're talking about alternating the detail bands colours, then individual invoices ????
>
>>

Sorry if I wasn't clear Terry. Let me try again:

I am creating an invoice report. The report derives it's information from a single table, containing two types of records. The header record contains basic invoice information (invoice number, invoice date, customer, etc.). The detail records contain informatin on the specific charges (, invoice number, charge description, amount, etc.).

On the report I want to alternate the background color for each invoice. For instance the first invoice should not show a background color at all. The next invoice should show a background color, ie:

Header Invoice A (no background)
Detail A (no background)
Detail A (no background)
Detail A (no background)
Header Invoice B (grey background)
Detail B (grey background)
Detail B (grey background)
Header Invoice C (no background)
.
.
.

The header lines are showing on a group header band, with the detail lines in the detail band on the report.

What I am asking is what logic should be in the Print When option of A) the header band, and B) the detail band.