How to get the Windows SID number using Caché Command?

    SET $ZT = "CommandErr"
    OPEN Command:"QR"
    FOR {
        USE command
        READ Text
        USE $P
        SET Array($I(Array))=Text
    }
 CommandErr ;
    SET $ZT=""
    SET ZE=$ZE
    USE $P
    CLOSE command
    IF $P(ZE,">")'="<ENDOFFILE" {
        ; some error other than end of file
    }
    ELSE {
        ; parse contents of Array()
    }