Row currentRow = ADFUtils.findIterator(MAIN_TABLE_ITERATOR).getCurrentRow();
        ViewObjectImpl vo = (ViewObjectImpl)getMainViewObject();
        RowSetIterator rsi = vo.createRowSetIterator(null);
        int i = 0;
        while (rsi.hasNext()) {
            Row r = rsi.next();
            r.setAttribute("OrderNum", i);
            i++;
        }