Adding a new row in OAF

public void addrow() {
KoelMomHeadersEOVOImpl vo=getKoelMomHeadersEOVO1();
vo.setMaxFetchSize(0);
Row row = vo.createRow();
vo.last();
vo.next();
vo.insertRow(row);
row.setNewRowState(Row.STATUS_INITIALIZED);
}

and call this in co as

am.invokemtho(addrow);