SELECTECTVALUE not working fine.

Hi Anonymous 

You can refer to the following measure

Qtd Total Current Month =
CALCULATE (
    SUM ( LinhasEncomendas_BI[partes] ),
    MONTH ( LinhasEncomendas_BI[DataFinal] )
        = IF (
            ISBLANK ( SELECTEDVALUE ( LinhasEncomendas_BI[DataFinal].[MonthNo] ) ),
            MONTH ( TODAY () ),
            SELECTEDVALUE ( LinhasEncomendas_BI[DataFinal].[MonthNo] )
        ),
    ALL ( LinhasEncomendas_BI )
)

Qtd Total Previous Month =
CALCULATE (
    SUM ( LinhasEncomendas_BI[partes] ),
    MONTH ( LinhasEncomendas_BI[DataFinal] )
        = IF (
            ISBLANK ( SELECTEDVALUE ( LinhasEncomendas_BI[DataFinal].[MonthNo] ) ),
            MONTH ( EDATE ( TODAY (), -1 ) ),
            MONTH ( EDATE ( SELECTEDVALUE ( LinhasEncomendas_BI[DataFinal].[Date] ), -1 ) )
        ),
    ALL ( LinhasEncomendas_BI )
)

Qtd Total Previous Month =
CALCULATE (
    SUM ( LinhasEncomendas_BI[partes] ),
    MONTH ( LinhasEncomendas_BI[DataFinal] )
        = IF (
            ISBLANK ( SELECTEDVALUE ( LinhasEncomendas_BI[DataFinal].[MonthNo] ) ),
            MONTH ( EDATE ( TODAY (), -2 ) ),
            MONTH ( EDATE ( SELECTEDVALUE ( LinhasEncomendas_BI[DataFinal].[Date] ), -2 ) )
        ),
    ALL ( LinhasEncomendas_BI )
)

Best Regards!

Yolo Zhu

If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.