slicer saving last selected value

Hello All,

I have a report where I have slicer values like US-Canada,APAC and Overall.

And I have department values like Central,Georgia,Hyd and Pune

My requirement is If I select slicer  as US-Canada then I need to show only Central,Georgia

                               If I select slicer as APAC then I need to show only Hyd,Pune

                                If I select slicer as Overall then I need to show All 4.i.e, Central,Georgia,Hyd,Pune

So I created below dax and put it in filters for department slicer.

I am getting my resuly, But the issue here is its saving the last selected value and showing in other filter also.

lag = 
SWITCH (
    SELECTEDVALUE ( 'For Slicer'[Value] ),
    "APAC",
        IF (
            MAX ( 'Table'[Department] ) = "Hyd"
                || MAX ( 'Table'[Department] ) = "Pune",
            1,
            0
        ),
    "US-Canada",
        IF (
            MAX ( 'Table'[Department] ) = "Central"
                || MAX ( 'Table'[Department] ) = "Georgia",
            1,
            0
        ),
    1
)

Lets say If I select region slicer as us-canada and  its showing central and Geogia

So Now If I select department as Geogia and then change the region slicer as APAC Its showing Geogia  again in that.

Solved: Re: How to write if else in power Bi Dax - Microsoft Power BI Community 

is what I did