Last Working Day as filter default

Hello all, i have a filter which using a calculated column returns "today" so I can default my slicer. i would like to do something similar that shows "last working Day" for the last working day. also any future dates leave blank.

 

here is the code I used for "today", I woulder if I can be changed to suit

 

Last Working Dat = 
VAR _max =
    MAXX (
        FILTER (
            'DIM - Date Table',
            'DIM - Date Table'[Date] <= TODAY ()
                && 'DIM - Date Table'[IsWorkingDay] = 1
        ),
        'DIM - Date Table'[Date]
    )
RETURN
    SWITCH ( TRUE (), [Date] = _max, "Today", FORMAT ( [Date], "DD/MM/YYYY" ) )