Cannot view data in Bex Analyzer

Hihi...

I am currently working on one query, I had restricted the value for the key called "Calendar Day" to a variable called "Report Date". When i run the query in the Bex Analyzer, there are no values prompted out in the Bex Analyzer after I restrict the date. I choose the date: 17-1-2008 to display the results. I checked the multiprovider and there are data for the mentioned date here. But when I excute the query in bex analyzer, there are no records but when I choose the other date such as 7-4-2007, there are results displayed for that particular date. Do you have any idea why is this so?

Thanks you very much!!!!