Guidance On the Way of creating a Variable in my REPORT...

I have a Business User requirement, The Report is already builded and needs some changes ,

Here is the change, My report is having two main filter conditions at report level

Now the real problem starts is, One Condition is defined long back at the report level and it is fine ...

Now the change required is, for the same condition(Filter) the data have to be allowed for one particular input of other dependent object in the Report ....

and the Filter condition is to be applied as USUAL for the other i/p given

I am working with SAP BO 3.1 SP4...

With Oracle as my Database.........

Thanks in Advance........