private void saveNames( BaseSpreadsheet _wb, WritableWorkbook _xwb )
{
for (final Entry<String, CellRange> nd : _wb.getModelRangeNames().entrySet()) {
final String name = nd.getKey();
final CellRange ref = nd.getValue();
final CellIndex from = ref.getFrom();
final CellIndex to = ref.getTo();
if (from.getSheetIndex() == to.getSheetIndex()) {
_xwb.addNameArea( name, _xwb.getSheet( from.getSheetIndex() ), from.getColumnIndex(), from.getRowIndex(),
to.getColumnIndex(), to.getRowIndex() );
}
}