Dates Between calculation based on previous row

Hi,

Please check the below picture and the attached pbix file.

Days between measure: =
VAR currentcode =
    MAX ( Table1[CodeKey] )
VAR currentdate =
    MAX ( Table2[Date] )
VAR previousdate =
    MAXX (
        FILTER (
            ALL ( Table2 ),
            Table2[CodeKey] = currentcode
                && Table2[Date] < currentdate
        ),
        Table2[Date]
    )
RETURN
    IF (
        HASONEVALUE ( Table1[CodeKey] ),
        INT ( currentdate - previousdate )
            * DIVIDE ( previousdate, previousdate )
    )