diff --git a/__init__.py b/__init__.py
index 2264d7e..f73f9dd 100644
--- a/__init__.py
+++ b/__init__.py
@@ -16,6 +16,7 @@ def register():
         equipment.EquipmentMaintenance,
         equipment.EquipmentParty,
         equipment.ChangePropietary,
+        equipment.ChangeEquipment,
         configuration_equipment.Configuration,
         maintenance.Calibration,
         maintenance.CreateContractInitial,
diff --git a/equipment.py b/equipment.py
index 80c90c5..0283525 100644
--- a/equipment.py
+++ b/equipment.py
@@ -324,7 +324,9 @@ class ChangePropietary(ModelView):
     'Change of Propietary Equipment'
     __name__ = 'optical_equipment.change_propietary.form'
 
-    equipment = fields.Many2One('optical_equipment.equipment', "Equipment")
+    old_propietary = fields.Many2One('party.party', 'Old Propietary')
+    equipments = fields.Many2Many('optical_equipment.equipment-change_propietary.form', 'equipment', 'change', "Equipments")
+    #equipment = fields.Many2One('optical_equipment.equipment', "Equipment")
     new_propietary = fields.Many2One('party.party', "New Propietary")
     new_address = fields.Many2One('party.address', "New Address", required=True,
                                   domain=[('party', '=', Eval('new_propietary'))],)
@@ -358,3 +360,11 @@ class NewPropietary(Wizard):
         equipment.propietary_address = new_address
         equipment.maintenance_frequency = "6" if new_propietary.client_type == 'ips' else "12"
         equipment.save()
+
+
+class ChangeEquipment(ModelSQL):
+    'Change Equipment'
+    __name__ =  'optical_equipment.equipment-change_propietary.form'
+
+    equipment = fields.Many2One('optical_equipment.equipment', 'Equipment')
+    change = fields.Many2One('optical_equipment.change_propietary.form', 'Change')
diff --git a/view/change_propietary_form.xml b/view/change_propietary_form.xml
index 38bdae7..53232c3 100644
--- a/view/change_propietary_form.xml
+++ b/view/change_propietary_form.xml
@@ -2,8 +2,10 @@
 <!-- This file is part of Tryton.  The COPYRIGHT file at the top level 
 this repository contains the full copyright notices and license terms. -->
 <form>
-    <label name="equipment"/>
-    <field name="equipment" colspan="3"/>
+    <label name="old_propietary"/>
+    <field name="old_propietary"/>
+    <label name="equipments"/>
+    <field name="equipments" colspan="3"/>
     <label name="new_propietary"/>
     <field name="new_propietary" colspan="3"/>
     <label name="new_address"/>