MAKEDATE code not working properly

[Anonymous]

Hello my fellow QV friends!  I am having trouble understanding why the code below will not work.  Any ideas?  Thanks

LOAD
    PSSTYL            AS STYLE,
    PSSSFX            AS STYLE_SUFFIX,
    PSSZDS            AS SIZE_DESC,
    If(MIN(PSNUM2)<>0,MakeDate         (   LEFT(MIN(PSNUM2),4), 
                                            MID(MIN(PSNUM2),5,2), 
                                          RIGHT(MIN(PSNUM2),2)      ),0    ) AS START_SHIP_DATE
WHERE PSNUM2 > 1;