How to use the ramp-frontend.ramp_frontend.forms.EventUpdateProfileForm function in ramp-frontend

if not is_accessible_event(db.session, event_name,
                               flask_login.current_user.name):
        return redirect_to_user(
            '{}: no event named "{}"'
            .format(flask_login.current_user.firstname, event_name)
        )
    logger.info('{} is updating event {}'
                .format(flask_login.current_user.name, event.name))
    admin = is_admin(db.session, event_name, flask_login.current_user.name)
    # We assume here that event name has the syntax _
    suffix = event.name[len(event.problem.name) + 1:]

    h = event.min_duration_between_submissions // 3600
    m = event.min_duration_between_submissions // 60 % 60
    s = event.min_duration_between_submissions % 60
    form = EventUpdateProfileForm(
        suffix=suffix, title=event.title,
        is_send_trained_mails=event.is_send_trained_mails,
        is_send_submitted_mails=event.is_send_submitted_mails,
        is_public=event.is_public,
        is_controled_signup=event.is_controled_signup,
        is_competitive=event.is_competitive,
        min_duration_between_submissions_hour=h,
        min_duration_between_submissions_minute=m,
        min_duration_between_submissions_second=s,
        opening_timestamp=event.opening_timestamp,
        closing_timestamp=event.closing_timestamp,
        public_opening_timestamp=event.public_opening_timestamp,
    )
    if form.validate_on_submit():
        try:
            if form.suffix.data == '':