Report should run on "As On Date"

Hi,

I have created a WEBI report connected to BEX Query, which displays Sales Value within Calendar Days between From Date and To Date (User Prompts). The requirement is to have From Date should display "1st Day of the Month with respect to the Current Date"

To Date should display "Current Date"

As of now, the report displays the last value selected at the time of design. Please help me to achieve this functionality.

With Regards,

Raji. S