SSRS 2005
If you want to set the parameter / textbox with Date to format ... You can try this.
=Format(Today(), "yyyyMMdd")
If you want to subtract (or add), you can try the below syntax
=Format(DateAdd("d", -1, Today()), "yyyyMMdd")
=Format(DateAdd(DateInterval.Day, -1, Today()), "yyyyMMdd")
MSFT did not provide full details ... but this one will helpful
