Incremental Refresh with Analysis Services source

Hi Everyone,

just I am trying to set-up Power BI incremental feature on report where the source is Azure Analysis Services.

But I have problem that I need to filter Cube Dimension (f.e. YearMonth). In general, all dimensions comes from Analysis Services are imported as String. Of course, my idea was filter Cube Dimension member by Integer (YearMonth is greater than an parameter value returned from function), but this is not possible because dimension is imported as String. Bad way is change YearMonth datatype in next Step in M query, because I loose the Query Folding funcion that asked to source (Native Query). 

Is it possible to achieve an incremental query to Analysis Services source?

As you probably know, you can change datatype in MDX (with StrToValue function, f.e. StrToValue([Calendar].[YearMonth].CURRENTMEMBER.MEMBER_CAPTION)), but this is not applicable for me.

Also I tried to use incremental setup in PBI with this M query, but not with success:

let
    Source = AnalysisServices.Databases("asazure://westeurope.asazure.windows.net/****", [TypedMeasureColumns=true, Implementation="2.0"]),
    Cube = Source{[Name="***"]}[Data],
    #"Model1" = Cube{[Id="Model"]}[Data],
    #"Model2" = #"Model1"{[Id="Model"]}[Data],
    #"Added Items" = Cube.Transform(#"Model2",
        {
            {Cube.AddAndExpandDimensionColumn, "[Calendar]", {"[Calendar].[YearMonth].[YearMonth]"}, {"YearMonth"}},
            {Cube.AddMeasureColumn, "Sum_of_Cost", "[Measures].[Sum_of_Cost]"}
        }),
    #"Filter YearMonth by Function" = Table.SelectRows(#"Added Items", each List.Contains(fx_DateRangeToYearMonths(RangeStart,RangeEnd),[YearMonth])),
in
    #"Filter YearMonth by Function"
	
	
(rangeStartParam as datetime, rangeEndParam as datetime) =>  
    List.Generate( () => [ a = Date.StartOfMonth(rangeStartParam), b = rangeEndParam ], 
    each [a] <= [b], 
    each [ a = Date.AddMonths( [a], 1 ), b = [b]], 
    each Number.ToText(Date.Year([a]))&Text.PadStart(Number.ToText(Date.Month([a])),2,"0") )

 Does anyone experience how to incrementally refresh PBI from Analysis Services Source?

Thanks a lot for any ideas.