} else if (columnName.equals(JFritz.getMessage("number"))) {
} else if (columnName.equals("number")) {
    public boolean isCellEditable(int rowIndex, int columnIndex) {        String columnName = getRealColumnName(columnIndex);        if (columnName.equals(JFritz.getMessage("participant"))) {            return ((Call) filteredCallerData.get(rowIndex)).getPhoneNumber() != null;        } else if (columnName.equals("Kommentar")) {            return true;        } else if (columnName.equals(JFritz.getMessage("number"))) {        	return true;        }        return false;    }