Passing dynamic date range to WEBI document (Data is coming from BW Query-BICS)

Hello,

We have SAP BO 4.0 SP04.

I have created a WEBI Document that uses BW query(BICS Connection) as Data Source/Data Provider. We have a requirement from more than one user groups to schedule multiple instances of the same WEBI document for different date range, rest all selection parameter values remain same:

For example:

BW Query has Date Range variable (User Entry) for Clearing Posting Date and the business would like us to schedule the below two instances:

Scheduling  Instance1 - Clearing posting Date Range = 1st Day of Prev. Month - Last Day of Prev. Month

Scheduling instance 2 - Clearing posting Date Range = 1st Day of current month- Current Date

One of the options is to create two EXIT variables for Clearing posting date and create two BW queries and finally two separate WEBI reports. I would like to see if there is a better way of doing this.

Thanks,

Sujal