Using SelectedValue in measure for computing volume

The fix is to move the SELECTEDVALUE inside the measure using a VAR:

Volume =
VAR _SelectedDate =
    SELECTEDVALUE ( 'Complaints Raw Data'[Date Received] )
RETURN
    CALCULATE (
        COUNT ( 'Complaints Raw Data'[short_id] ),
        'Complaints Raw Data'[Date Received] = _SelectedDate
    )

Hi,

Create a Calendar table and have a *:1 relationship from the Date received column to the Calendar table.  To your slicer, drag the Date from the Calendar table.  Write this measure

Volume = count('Complaints Raw Data'[short_id])

Hope this helps.