Thanks for your reply, David.

I forgot to mention, the detail band is empty... I sum the detail values inside the report and place the result in the report Group Footer2:year+item ...
When I start the rectangle in the detail band, the stretch and float options are disabled in the properties of the rectangle... Also, disabled when I start the rectangle in the Group Header 2:year+item.
Does that make sense?

If you need more information, please let me know.