how to remove timestamp,when i select calendar date(input Controls)

Hi everyone

I am using webi 4.0

My problem is when i select calendar date(input Controls) i am able to display time stamp along with date in input Controls(MM/dd/yyyy12:00:00 AM)

i want to change (MM/dd/yyyy12:00:00 AM) to (yyyy-MM-dd), when i select calendar date(input Controls)

where is the calendar date(input Controls)' format setting??

i dont want to show the time stamp in calendar date(input Controls) as my users dislike to see that timestamp .

Thanks & regards