Add Filter values in WAD

Hi all,

I am extremly new in WAD.

I have a requirement that when user is exetuing a report in web, they are gettin a filter option to select key figure.

Now they want one more value to be added in the filter selection. It means when they execute report in portal they should get one more values to select in the already existing filter values.

How it can be done. what changes I have to do in WAD

Please explain in details if possible as I am very new in WAD.

Thanks and Regards

Sunny