Can' assign table elements to variables

First, Thanks for some_bih  and Dangar332  help.

Hi, IgorKaradzic 

May I ask if you have solved this case, I noticed that no one is following your problem, you may refer to the following DAX.

DAX: 

Duration = DATEDIFF('Table'[Planned Start Date],'Table'[Planned Finish Date],DAY)

Pre Duration = 
VAR _id = 'Table'[ID Task]
VAR _index = 'Table'[Index]
VAR _preduration =
    CALCULATE (
        MIN ( 'Table'[Duration] ),
        FILTER ( 'Table', 'Table'[ID Task] = _id && 'Table'[Index] = _index - 1 )
    )
RETURN
    _preduration


Diff = 
VAR _id = 'Table'[ID Task]
VAR _index = 'Table'[Index]
VAR _sdate = 'Table'[Planned Start Date]
VAR _prefdate =
    CALCULATE (
        MAX ( 'Table'[Planned Finish Date] ),
        FILTER ( 'Table', 'Table'[ID Task] = _id && 'Table'[Index] < _index )
    )
VAR _diff =
    IF ( ISBLANK ( _prefdate ), BLANK (), DATEDIFF ( _prefdate, _sdate, DAY ) )
RETURN
    _diff


Actual Start Date = 
VAR _id = 'Table'[ID Task]
VAR _index = 'Table'[Index]
VAR _sdate = 'Table'[Planned Start Date]
VAR _taskd0 =
    CALCULATE (
        MIN ( 'Table'[Responsible Task] ),
        FILTER (
            'Table',
            'Table'[ID Task] = _id
                && NOT ( ISBLANK ( 'Table'[Pre Duration] ) )
                    && 'Table'[Diff] <= 0
        )
    )
VAR _sdate1 =
    CALCULATE (
        MIN ( 'Table'[Planned Start Date] ),
        FILTER (
            'Table',
            'Table'[ID Task] = _id
                && NOT ( ISBLANK ( 'Table'[Pre Duration] ) )
                    && 'Table'[Responsible Task] = _taskd0
        )
    )
VAR _index1 =
    CALCULATE (
        MIN ( 'Table'[index] ),
        FILTER (
            'Table',
            'Table'[ID Task] = _id
                && NOT ( ISBLANK ( 'Table'[Pre Duration] ) )
                    && 'Table'[Responsible Task] = _taskd0
        )
    )
VAR _dnums =
    CALCULATE (
        SUM ( 'Table'[Pre Duration] ),
        FILTER (
            'Table',
            'Table'[ID Task] = _id
                && NOT ( ISBLANK ( 'Table'[Pre Duration] ) )
                    && 'Table'[Index] <= _index
        )
    )
RETURN
    IF (
        ISBLANK ( 'Table'[Diff] ),
        'Table'[Planned Start Date],
        IF (
            'Table'[Responsible Task] = _taskd0,
            'Table'[Planned Start Date] + [Diff] + 1,
            _sdate1 + _dnums + [Index] - _index1 - 1
        )
    )



Actual Finish Date = 'Table'[Actual Start Date]+[Duration]

Best Regards,
Yang
Community Support Team

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If I misunderstand your needs or you still have problems on it, please feel free to let us know. Thanks a lot!

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