How to create dummy variable in Webi report in BO 4.0 with Bex query.

Question

Dear All,
We have a requirement where we need to overlap multiple tables and based on user selection any one of the table should display in report.
We are on BO 4.0 and source is BW Bex report, we dont have any Universe.
To achieve this we plan to have dummy variable with some fix value and use it as report filter & based on selected value in filter the related table should be display.
We have not found any way to have dummy variable directly in Webi.
Is their any way we can create dummy variable directly in Webi?
Thanks v much in advance,
Regards,

Answer 1

lets say u want to display following picture:
sept$-----august$
City
-chicago123$--
44$
so in Query designer go to Default values section.
Bring in Calendar month
right click calendar month
and hit Restrict
now select variable
use standard sap variable Current Month.
hit okey
now select Variable and hit Red button
Result u restricted current month.
in columns bring in keyfigure $
right click and hit edit
bring in time field calendar month
right click and hit restrict
bring in Current month
right click and select - SET OFFSET FOR VARIABLE
select -1
hit okey
repeat the above process
and this time select offset = -2
this way u restricted current month
but displayed last 2 months for keyfigure values.