I am using MS project Server 2003 and would like to create a variance to calculate the variation between the interim baseline finish (Baseline1 Finish) and the current finish (Finish). I’ve managed to create a formula in a TASK Duration Custom Field using the following formula: ProjDateDiff([Baseline1 Finish],[Finish]) I would like to create the same variance formula as a PROJECT duration to display the project variance in the project Centre in Project Web access. The Custom Field formula I’ve used for TASK Duration does not calculate the variance in PROJECT Duration Custom Field. Can anyone suggest a formula that will calculate Baseline1 Finish v Finish for the project. Thanks Steve