Set a slider by using this formula
SlicerDate = SELECTCOLUMNS('Date', "Date",[Date])
And then make small changes in DAX
Date_Today_Default =
var currentrowdate = FORMAT(Max('Date'[Date]), "dd/mm/yyyy")
var DateToday = FORMAT(TODAY(),"dd/mm/yyyy")
return
IF (isFiltered(SlicerDate[Date]), "YES", IF (DateToday = currentrowdate, "YES", "NO"))
And the do the following
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