Working with the DATEDIFF and trying to find why my "Started Late" column will not populate. Any help would be appreciated. aggregator.function=SUM aggregator.namekey=actualStartDate aggregator.valueexpression=IF({actualStartDate}>{plannedStartDate},1,IF(ISBLANK({actualStartDate}),IF($$TODAY>{plannedStartDate},1,0),0)) aggregator.valueformat=val displayname=Started Late linkedname=direct namekey=actualStartDate textmode=true valueexpression=IF DATEDIFF({actualStartDate}={plannedStartDate},0,IF(ISBLANK({actualStartDate}),IF($$TODAY>{plannedStartDate},1,0),0)) valueformat=HTML The value is showing "3" in the SUM. However, the middle project isn't late, so it should be showing "2" in the SUM and the other values should be showing 1's. Dave Rulon Great Dane Savannah, GA 912-644-2452