In theme of arbitration, to fini of the verification of the achievement of the purposes of the act which contains the invitation to the opponent of proceed to the designation of the proper referees, made known without respect of the forms for the notification of the acts in PR Ocesso Civil, the judge is to ad ascertain not only that the act it is a state to knowledge of the recipient, but also that such knowledge it is it intervened in time useful a a a the latter the exercise of the right choice of the referee.