Great, thank you so much Kamille! It looks like when I do this it is subtracting one from the due date. For example, when the event date is 7/29 and I leave number of days blank it calculates the due date at 7/28. Also if I put 1 in the Number of Days field it is calculating 7/29 the same day. Is this how it should be working. Ideally when I put 1 in the number of days field I would like it to add one day to the event date.