WTD calculation not working in SSAS

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BI

SSAS

Hi

I am creating WTD Calculation into SSAS but it is mot working as my expectations,I want to Week to Week data from this measure for example when I select Sunday it will return 7 days data from Sunday to Saturday.
When I select Monday it will return Monday to Sunday Data.

What I have tried:

I am Creating these WTD measures

1.Aggregate(PeriodsToDate([Time].[Time].[Week],
[Time].[Time].CurrentMember),
[Measures].[Actuals_Sales])


2.Aggregate(WTD( [Time].[Time].CurrentMember),[Measures].[Actuals_Sales])

Please help me if there is any suggestions.