I have two groups in the report:
1. Invoice Number
2. Invoice detail.
I need to put comments from details as concatenated string before details.
If I have teo details with 'comments of detail 1' and ''comments of detail 2',
my report should show:
Invoice No-123456
description:
comments of detail 1
comments of detail 2
invoice Details:
.....

How can I do it?
Please help, it's urgent.