I currently have a table of all the business days of the year. WorkingDays [BusDate]. I have a file that contains the current date WorkingFile [CurrentDate]. I am trying to figure out how to find the previous business day from the [BusDate] field in the WorkingDays table using the [CurrentDate] in the WorkingFile table, and return it to a field labeled [PriorBusDate] in the WorkingFile. For some reason this is difficult for me.