Code Luck

Found this after lot of searching.

I was grouping data in a table in a SQL report. I could successfully add row numbers to the details of the group but was unable to add row numbers to group header.
Something like this

1 ClaimID1

1
2
3

2 ClaimID2

1
2
3
4
5

3 ClaimID3

1

The following expression helped adding the row number for the groups
=RunningValue(Fields!ClaimID.Value, CountDistinct, Nothing)