Running total of a measure which use DATESINPERIOD and months from fact table

I am using a measure below to display the months from fact table as described here: Billings12Months = CALCULATE ( SUM ( ‘Datatable'[Allowable] ), DATESINPERIOD ( DimDate[Date], MIN ( DimDate[Date] ), +12, MONTH ) ) My attempt to get the running total of above measure is failing: BillingsRunningTotal = CALCULATE ( [Billings12Months], FILTER ( ALLSELECTED…

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