Error saving record in model inherited from crm.meeting?

Hi, I've inherit the 'crm.meeting' and change the name to 'radar.eventos 'but now I can't save a record. I've this error : 2013-06-17 19:06:56,060 27957 ERROR teste17junho openerp.netsvc: ValidateError The value "radar.eventos,4" for the field "calendar_attendee.ref" is not in the selection Traceback (most recent call last): File "/opt/openerp-7.0-20130516-231144/openerp/netsvc.py", line 292, in dispatch_rpc result = ExportService.getService(service_name).dispatch(method, params) File "/opt/openerp-7.0-20130516-231144/openerp/service/web_services.py", line 626, in dispatch res = fn(db, uid, *params) File "/opt/openerp-7.0-20130516-231144/openerp/osv/osv.py", line 188, in execute_kw return self.execute(db, uid, obj, method, *args, **kw or {}) File "/opt/openerp-7.0-20130516-231144/openerp/osv/osv.py", line 144, in wrapper raise except_osv(inst.name, inst.value) except_osv: (u'ValidateError', u'The value "radar.eventos,4" for the field "calendar_attendee.ref" is not in the selection') My code is: mymodule/mymodule.py class radar_eventos(osv.osv): """ Model for Events """ _name = 'radar.eventos' _description = "Events" _inherit = 'crm.meeting' _columns = { 'state': fields.selection([ ('novo', 'Novo'), ('cancelado', 'Cancelado'), ('agendado', 'Agendado'), ('emcurso', 'Em Curso'), ('realizado', 'Realizado'), ], 'Status', readonly=True), 'eventotipo_ids': fields.many2many('radar.eventos.tipo', 'radar_tipo_eventos_rel', 'evento_id','tipo_id','Tipo de Evento'), 'id_evento': fields.char('Id Evento', size=64, readonly=True), 'registo_id': fields.many2one('registos.vigilancia',u'Registo de Vigilância'), 'accoes_tarefas_id': fields.one2many('accoes.tarefas','evento_id', u'Acções e Tarefas'), 'ideias_id': fields.one2many('gestao.ideias','evento_id', u'Ideias'), 'objectivos': fields.text('Objectivos'), #fields many2one - new tables 'attendee_ids': fields.many2many('calendar.attendee', 'radar_attendee_rel', 'event_id', 'attendee_id', 'Attendees', states={'done': [('readonly', True)]}), 'partner_ids': fields.many2many('res.partner', 'radar_partner_rel', 'meeting_id', 'partner_id', string='Attendees', states={'done': [('readonly', True)]}), } _defaults = { 'state': 'novo', } def create(self, cr, uid, vals, context=None): if vals.get('id_evento') == None: vals['id_evento'] = self.pool.get('ir.sequence').get(cr, uid, 'radar.eventos.id_evento') return super(radar_eventos, self).create(cr, uid, vals, context) def copy(self, cr, uid, id, default=None, context=None): default.update({ 'id_evento': self.pool.get('ir.sequence').get(cr, uid, 'radar.eventos.id_evento'), }) return super(radar_eventos, self).create(cr, uid, vals, context) radar_eventos() mymodule/mymodule_view.xml Eventos Formradar.eventos

Eventos Treeradar.eventosEventos Calendarradar.eventosEventos Searchradar.eventosEventosir.actions.act_windowradar.eventosformcalendar,tree,formcalendartreeform I don't understand what am I doing wrong, can you please help me ? I made a debug and in the function _links_get the res as this : [{'id': 1, 'name': u'Partner', 'object': u'res.partner'}, {'id': 2, 'name': u'Product', 'object': u'product.product'}, {'id': 3, 'name': u'Invoice', 'object': u'account.invoice'}, {'id': 4, 'name': u'Voucher', 'object': u'account.voucher'}, {'id': 5, 'name': u'Sales Order', 'object': u'sale.order'}, {'id': 6, 'name': u'Event', 'object': u'calendar.event'}, {'id': 7, 'name': u'Meeting', 'object': u'crm.meeting'}, {'id': 8, 'name': u'Serial Number', 'object': u'stock.production.lot'}, {'id': 9, 'name': u'Purchase Order', 'object': u'purchase.order'}, {'id': 10, 'name': u'Project', 'object': u'project.project'}, {'id': 11, 'name': u'Project task', 'object': u'project.task'}] I think that I'm getting the error above because my module isn't in this list. I created my inherit with another name (radar.eventos) because I don't wanted to change the calendar of other modules, I wanted to keep the original in the other modules of Openerp and create a new one with new tables to my new module.