Hello Anaplanners - I am trying to add a 2nd column on this module that calculates variance between 2H Budget minus Forecast as you can see in the 2nd pic. 1st pic shows my versions. Every time I attempt to create a new row for this calculation, I get the error that you can see in the 3rd pic. At a past company, I was able to essentially stage the data because our versions module had a "Parent" column. Is there an effective workaround to calculate the a 2nd variance column as I'm trying to do? Many thanks.