[polygris]

    COM     comWorkSheet, comRange;
    ;

    // Initializing XLSWorkSheet object
    comWorkSheet    = this.getWorkSheet(_workSheet);
    if (!comWorkSheet)
        this.throwError("@DIS6043");

    // Initializing XLSRange object
    comRange        = comWorkSheet.Range(_bookMark);
    if (!comRange)
        this.throwError("@SYS27391");

    // Group selection
    comRange.group();