Hello, 

I'm trying to modify a priority widget so that instead of having only 3 priority levels, it has 5.

This is the section of the code in the main module's view that contains the priority widget (in bold)

[...]
<record model="ir.ui.view" id="crm_case_claims_tree_view">
            <field name="name">CRM - Claims Tree</field>
            <field name="model">crm.claim</field>
            <field name="arch" type="xml">
                <tree string="Claims">
                    <field name="name"/>
                    <field name="partner_id"/>
                    <field name="user_id"/>
                    <field name="date"/>
                    <field name="stage_id"/>
                    <field name="date_action_next"/>
                    <field name="action_next"/>
                    <field name="date_deadline"/>
                    <field name="categ_id" string="Type"/>
                    <field name="date_closed" invisible="1"/>
                </tree>
            </field>
        </record>
        <record model="ir.ui.view" id="crm_case_claims_form_view">
            <field name="name">CRM - Claims Form</field>
            <field name="model">crm.claim</field>
            <field name="arch" type="xml">
                <form string="Claim">
                <header>
                    <field name="stage_id" widget="statusbar" clickable="True"/>
                </header>
                <sheet string="Claims">
                    <group>
                        <field name="name"/>
                        <field name="date"/>
                    </group>
                    <group colspan="4" col="4"  groups="base.group_user">
                        <field name="user_id" context="{'default_groups_ref': ['base.group_user', 'base.group_partner_manager', 'base.group_sale_salesman_all_leads']}"/>
                        <field name="priority" widget="priority"/>
                        <field name="section_id" groups="base.group_multi_salesteams"/>
                        <field name="date_deadline"/>
                    </group>
[...]

in the .py file, priority is defined as

'priority': fields.selection([('0','Low'), ('1','Normal'), ('2','High')], 'Priority'),

In my module, I'm trying to inherit the previous view using 

<?xml version="1.0" encoding="UTF-8"?>
<openerp>
    <data>
        <record model="ir.ui.view" id="crm_claim_mod_view">
            <field name="name">crm.claim.mod.view</field>
            <field name="model">crm.claim</field>
            <field name="inherit_id" ref="crm_claim.crm_case_claims_form_view"/>
            <field name="arch" type="xml">
                 <field name="priority" position="replace">
                    <field name="priorityNew" widget="priorityNew"
                </field>
            </field>
        </record>
    </data>
</openerp>

and in my .py I have defined 

 # -*- coding: utf-8 -*-
from openerp import models, fields, api
from openerp.osv import fields
AVAILABLE_PRIORITIES = [
    ('0', 'Low'),
    ('1', 'Normal'),
    ('2', 'High'),
    ('3', 'Very High'),
    ('4', 'Max'),
]
class crm_claim_mod(models.Model):
    _inherit = "crm.claim"
    _description = "Claims modification"
    priorityNew = fields.selection(AVAILABLE_PRIORITIES, 'Priority', select=True)

    @api.model
    def create(self,vals):
        vals['stage_id']='1'
        return super(crm_claim_mod,self).create(vals)

But I keep getting this error message

Error details:
Field `priorityNew` does not exist
Error context:
View `crm.claim.mod.view`
[view_id: 1641, xml_id: carlosUpgrade.crm_claim_mod_view, model: crm.claim, parent_id: 1016]" while parsing /home/carlos/dbTest/codigo/mods/carlosUpgrade/crm_claim_mod_view.xml:4, near
<record model="ir.ui.view" id="crm_claim_mod_view">
<field name="name">crm.claim.mod.view</field>
<field name="model">crm.claim</field>
<field name="inherit_id" ref="crm_claim.crm_case_claims_form_view"/>
<field name="arch" type="xml">
<field name="priority" position="replace">
<field name="priorityNew" widget="priorityNew"/>
</field>
</field>