setter a hasone asociation in a object model

Hello.

I'm trying to have a combobox on a form to add store doing that I have associated with a grid, but can not get pass the value of the associated models.

I tring make a setter (which I defined) but nothing.

Extjs version is 4.1.

Here you have an example of code to see what you think.

What I do is start object which then fill the form values ??and then do an add to this record store.

I am that which I do not. Thank you very much.

Model:

Ext.define('estacionClinica.model.Peticion', {

extend : 'Ext.data.Model',

fields : [{

name: 'id',

type: 'int'

}..],

associations : [{

type : 'hasOne',

model : 'estacionClinica.model.AmbitoPeticion',

getterName : 'getAmbitoPeticion',

setterName : 'setAmbitoPeticion',

associationKey : 'ambitoPeticion'

associatedName : 'ambitoPeticion'

)]

Store:

Ext.define('estacionClinica.store.Peticion', {

extend : 'Ext.data.Store',

model : 'estacionClinica.model.Peticion',

autoLoad : false,

pageSize : itemsPerPage,

proxy : {

type : 'ajax',

autoSave: false,

api: {

create : 'savePeticion.json',

read: 'recuperarPeticionesByIdPaciente.json',

update : 'updatePeticion.json',

destroy : 'deletePeticion.json'

},

reader: {

type: 'json',

root: 'peticiones',

totalProperty: 'results',

successProperty: 'success',

messageProperty: 'mensaje'

},

writer: {

type: 'json'

//root: 'peticion',

//totalProperty: 'total',

//successProperty: 'success',

//messageProperty: 'message',

//idProperty: 'id'

}

}

});

view: (parte of this)

items: [{

xtype: 'form',

alias : 'widget.addPeticionForm',

id: 'formAddPeticion',

,{

xtype : 'combo',

fieldLabel : 'Caracter Peticion',

name : 'caracterPeticion',

id : 'comboCaracterPeticion',

queryMode : 'local',

valueField : 'id',

displayField: 'nombre',

editable:false,

store: 'CaracterPeticion',

typeAhead: true,

triggerAction: 'all',

forceSelection:true

}

}

Controller:

when click addPeticion:

var peticion = Ext.create('estacionClinica.model.Peticion', {

cip: 'hola',

codigo: 'hola'

//caracterPeticion: [{id: '1', name: ''}]

});

var formularioNuevaPeticion = winPeticion.down('form');

formularioNuevaPeticion.loadRecord(peticion);

winPeticion.show();

When I click on save:

var ventanaNuevaPeticion = button.up('window');

var formularioNuevaPeticion = ventanaNuevaPeticion.down('form');

var registroPeticion = formularioNuevaPeticion.getRecord();

var datosPeticion = formularioNuevaPeticion.getValues();

registroPeticion.set(datosPeticion);

registroPeticion.setCaracterPeticion(registroPeticion);

registroPeticion.setAmbitoPeticion(this.getComboAmbitoPeticion().findRecordByValue(this.getComboAmbitoPeticion().getValue()));

registroPeticion.setCaracterPeticion(this.getComboCaracterPeticion().findRecordByValue(this.getComboCaracterPeticion().getValue()));

this.getPeticionStore().add(registroPeticion);

this.getPeticionStore().sync();

In payload I can see nothing of my association data:

cip: "hola"

codigo: "hola"

fechaPeticion: ""

id: 0

idProceso: ""

nhc: 0