QAxObject Importing Excel named ranges using MS Query

Hi all, I got xlsm file format and I defined a table with name range.
I can get the table name, but I didn't succeed to recive his ranges I tried this code

Code:

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QAxObject* _excel            = new QAxObject( "Excel.Application", 0 );
    QAxObject* workbooks    = _excel->querySubObject( "Workbooks" );
    QAxObject* workbook     = workbooks->querySubObject( "Open(const QString&)", fileName );
    QAxObject* sheets          = workbook->querySubObject( "Worksheets" );
    //worksheets count
    int count = sheets->dynamicCall("Count()").toInt();
    count = sheets->property("Count").toInt();
    for (int i=1; i <= count; i++) //cycle through sheets
     {
        //sheet pointer
        QAxObject* sheet        = sheets->querySubObject( "Item( int )", i );
        QString s_name          = sheet->dynamicCall("Name()").toString();
        QAxObject* tables       = sheet->querySubObject("Names");
        int table_count         = tables->dynamicCall("Count()").toInt();
        table_count             = tables->property("Count").toInt();
        qDebug("sheet name :%s",s_name.toAscii().constData());
        for (int j=1; j <= table_count; j++)  //cycle through tables
        {
            QAxObject* table    = tables->querySubObject( "Item( int )", j );
            QString t_name      = table->dynamicCall("Name()").toString();
            qDebug("\ttable[%d]: %s",j,t_name.toAscii().constData());
            QAxObject * usedrange = table->querySubObject("UsedRange");
            QAxObject * rows = usedrange->querySubObject("Rows");
            QAxObject * columns = usedrange->querySubObject("Columns");
            int intRowStart = usedrange->property("Row").toInt();
            int intColStart = usedrange->property("Column").toInt();
            int intCols = columns->property("Count").toInt();
            int intRows = rows->property("Count").toInt();
            qDebug("\t\t[ Cells(C%d:C%d) , Rows(R%d:R%d) ]",
                   intColStart,intCols,intRowStart,intRows);
        }
    }
    _excel->setProperty("DisplayAlerts", 0); //remove alert when close the file
    workbook->dynamicCall("Close()");
    _excel->dynamicCall("Quit()");

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Got the error:

Quote:

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QAxBase::dynamicCallHelper: UsedRange: No such property in [unknown]
Candidates are:

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Help!