I want to get a period rolling for past 3 months in a report and i get below results when using period rolling function.
i have 2 hiearachies in date dimension for calendar & fiscal,so i have used below fx in period rolling
PERIODROLLING("Fact - Sales"."Amount", -2 ,0,"Sales"."Dim - Date"."Dim - DateDim - Year").
Please let me know,if ia ma missing something.

thanks