Blank row after non consequtive dates

Hi,
I am developing a report in Webi, where I am displaying dates in a column in a vertical table.
Now the requirement is I have to show a blank row after non consequtive dates.
e.g.

01/01/09
01/02/09
01/03/09
Blank Row
01/07/09
01/08/09
Blank Row
01/11/09
Blank Row
01/15/09

Please help on how this can be done.
Thanks.


Noti (BOB member since 2009-05-01)

Brief sketch:
Create a second data provider fetching all dates from a calendar table in the database/universe. Merge both data providers on dates.


Andreas :de: (BOB member since 2002-06-20)