Todays date in prompt screen

Hello,

I am using Business Objects Desktop inteleigence 11.5.0.0

Every morning we run a report for the previous day.

In my query i say date is greated than equal to and date is less than eual to. both of them are prompts. example today is 10-Sep-2008, i will give 09-Sep-2008 00:00:00 and 09-Sep-2008 23:59:59

I want that every time any user launchs this report in the prompt screen insetad of us typing the date ranges, i would like it to have a default value of yesterdays date.

Hope you can help. I am brand new to BO.

Appriciate !

Prakash