g_return_val_if_fail (ds, FALSE);
g_return_val_if_fail (ds->datasheet, FALSE);
g_return_val_if_fail (ds, FALSE);
g_return_val_if_fail (ds->datasheet, FALSE);
result = datasheet_insert_rows (ds->datasheet, posn, &cc, 1);
if ( result )
result = datasheet_insert_rows (ds->datasheet, posn, &cc, 1);
if ( result )