Differentiate operations

Hi Tommyvhod ,

Based on your description, I have created a simple sample:

Please try:

add an index column:

Then apply the measure:

Aging = 
var _time =
    MAX(Data[Datum trans])
var _index = MAX('Data'[Index])
        VAR _maxLastTime  =
        CALCULATE(MAX(Data[Datum trans]),
        FILTER(ALLEXCEPT(Data, Data[ID]), [Index]=_index-1)
        )
    VAR _datedif =
    DATEDIFF(_maxLastTime,_time,DAY)
    Return
    IF(_datedif >0,_datedif,0)

Final output:

Best Regards,

Jianbo Li

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