[otrs] Force state for new tickets

Hello, I want to force new tickets (phone and e-mail) to have "open" state when created... I have tried with the following at Config.pm: $Self->{'Ticket::PhoneDefaultNextStateType'}=['open']; $Self->{'Ticket::EmailDefaultNextStateType'}=['open']; Then I restart httpd, but when an agent creates a new phone ticket or an e-mail one, the list allows him to assign many other states: open, closed, pending, and so on... What am I doing wrong? Thanks and best regards