Thanks MF.
I tried this one already. But this won't work in my case because I have dynamic sorting which is done using Conditional Blocks.
For Example, My report has following Columns,
Product Line, Production Cost, Margin.
Calculated Data Item(Rows) : mod(running-count([Product Line]),2)
Here user can select from Prompt page Production Cost or Margin to sort descending. This feature is done using Conditional blocks. So Calculated(Rows) differs while these columns sorted.
I tried RowNumber() in variables but I was not able to identify whether a number is Odd or Even.
Regards,
Prapagar