We have vessels, I have a date on field (date_on) and a dateoff field (date_off). I have this in a portal. I have a field to calc the number of days on vessel by using the 2 dates. My issue is, I have someone that I have a date on for but they have not gotten off yet, the system put a ? in the field and therefore it will not count the other dates. When it show up in my report, it has a negative number . I assume all of this is because I have not put a date off in yet, what can I do or is there a script that will work around? Thanks if you can help.