Greetings.

Im trying to add a Field in "pos.order" but i can't see the added field.

Could you please les me know my mistake.

ODOO V15

file.js

odoo.define('my_module.models', function (require) {
  'use strict';
  var models = require('point_of_sale.models')
  models.load_fields('pos.order', ['order_new_field'])

Python class

class PosOrder(models.Model):
    _name = 'pos.order'
    _inherit = 'pos.order'

    order_new_field = fields.Selection(
        [('1', 'Bla'), ('2', 'Ble')], 'Desc.', default='1')

When i try to read or set the field it is not stored or showed 

const PosUsoCFDIInvoice = PaymentScreen => class extends PaymentScreen {
   setField(e) {
     this.currentOrder.order_new_field = e.target.value
   }
}

All Code is executed but no saved in the model.

Thank you