Setting specific row numbers for report pages

Hello,

I need to create a report, this report must have 10 rows for first page, rest of the pages must contain max. 25 row per page. Is it possible to create a condition like this? I've done 20 rows per page using Integer DataItem before, but I couldn't be able to create this condition using Integer DataItem.

I have tried the solution in this link: http://stackoverflow.com/questions/10467997/how-to-page-break-after-specific-rowsuppose-25-rows-in-rdlc-reporting

In the Groups' expression I've given this condition;

Iif(Fields!CurrReport_PAGENO.Value>1,System.Math.Ceiling(RowNumber(Nothing)-1/25)+1,System.Math.Ceiling(RowNumber(Nothing)-1/10)+1)

It doesn't solved my problem.

Any suggestions?

Ekin