Rolling up data by the wrong date

[donovan]

I have two different date fields on my collection and when I roll-up by month it is rolling-up by the wrong date. How do I change the date?

[starlifter]

StarLifter will roll-up values based on a field with a type of “date”. To roll-up by your desired field make sure it’s dictionary type is “date” and change the other date fields to a type of “timestamp”.