Trying to get a running total over time with a toggle on whether or not capacity is coming online

[JessSherman]

So I have a table named downstream dispencing_asset_timing and it has assets with an assigned capacity coming online and going offline over time. There's a column called add or remove and when there's a 1 it means the capacity needs to be added and when it's -1 it needs to be removed. I tried writing a DAX formula for that but I keep getting errors that a single value for Date cannot be determined. Any help would be appreciated!

Running Total of Capacity =

VAR CurrentDate = 'CALENDAR'[Date]

VAR ToggleValue = 'downstream dispencing_asset_timing'[Add or Remove]

RETURN CALCULATE( SUM('CALENDAR'[Date]), FILTER( ALL('CALENDAR'), 'CALENDAR'[Date] <= CurrentDate && 'downstream dispencing_asset_timing'[Add or Remove] = 1 && 'downstream dispencing_asset_timing'[Date] <= CurrentDate ) )

[JessSherman]

I figured it out I think:

Running Total of Capacity (Tons per Day) =

VAR CurrentDate = MAX('CALENDAR'[Date])

VAR FilteredUnits =

    FILTER(

        'downstream dispencing_asset_timing',

        'downstream dispencing_asset_timing'[Date] <= CurrentDate &&

        'downstream dispencing_asset_timing'[Add or Remove] = 1

    )

RETURN

    CALCULATE(

        SUMX(

            FilteredUnits,

            DIVIDE(

                RELATED('midstream fueler_assumptions'[Dispensing Capacity (kg/day)]),

                1000

            )

        )

    )

I divided by 1000 to get it in TPD instead if kg/day