Issue with using DATEADD

HI   Anonymous

Number of Sales YTD Comparison =
VAR _SD = 'Selected Year'[Parameter Value]
VAR _T =
    TODAY()
VAR _TSD =
    DATE( _SD, MONTH( _T ), DAY( _T ) )
RETURN
    CALCULATE(
        DISTINCTCOUNT( 'Sales'[Sales ID] ),
        FILTER(
            ALL( 'Sales' ),
            'Sales'[Sales Date] >= DATE( _SD, 1, 1 )
                && 'Sales'[Sales Date] <= _TSD
        )
    )

It'd would be great to add a date table to your model and use that, for adding a date table please check this link: https://www.vahiddm.com/post/creating-calendar-table-with-3-steps

Appreciate your Kudos!!
LinkedIn: www.linkedin.com/in/vahid-dm/