Nadya,

Actually, what I don't understand is that after I have marked the records, like you said, each set 10th+1 records as New Group (e.g first ten record would be mark '1' and second would be '2' and so on) how can I display that new group into the page.

But I have discovered the way that after I got new group I run the report by
SET FILTER TO fieldnewgroup=newgroup.

Thanks a lot for your help, I really appreciated.

Budianto M.