DAX, filter CALCULATE on date interval.

Hi,

I am trying to filter a measure to only display an average for the last two days but I get a constant average value for all dates in the dates table (see attachment). Obviously I am missing something here but I cant figure out what. Other filters are working fine and all relationships are in place.

Here is my DAX:

=CALCULATE(AVERAGE(Performance[Duration]);DATESBETWEEN('Date'[Date];TODAY()-2;TODAY()))