Hi I'm not sure whether this is even possible. I have got a custom date field on the project level called Backlog Completion Date. I need to group them by in the future (OK), in the past (in backlog) or within the next 7 days (At risk) I need to make a custom grouping based off of this with the following formula: IF(DATEDIFF($$TODAY,{DE:Backlog Completion Date})>7,"OK", IF(DATEDIFF($$TODAY,{DE:Backlog Completion Date})<0,"In Backlog","At Risk")) But all it does is return Null Value. What am I doing wrong? Thank you Harry Wigley ENT