I don't think multiple detail bands are going to help. I think what you need is a complicated join table...I know that doesn't help much but feel free to email me the table structures and I'll work with you on how to do this.

>Dear Experts
>
>I have three dbf’s as
>
>Procuts
>Addition
>Discount
>
>I want to print invoice in
>
>In 1st band: Products
>In 2nd band: Addition
>In 3rd band: Discount
>
>The print preview should look like this
>
>Product-------Qty------Rate--------Amount
>Apple-----------5---------10------------50
>Banana--------30-------10-----------300
>Sub Total------------------------------350
>
>Addition
>Supply expenses---------------------20
>Sub Total------------------------------370
>
>Discount-------------------------------70
>Total------------------------------------300
>
>Should I use more than one Detail Band or is there any other method exists.
>
>Please help