I am a beginner in odoo 8. I want to use the template (template id = "Variants") that is in the website_sale module in the form view of "Order lines" that has an external_id (ref="sale.view_order_form"). so I made inheritance like this:

<record id="multiple_variante_sale_order_form" model="ir.ui.view">

         <field name="name">sale.order.form</field>

         <field name="model">sale.order</field>

         <field name="inherit_id" ref="sale.view_order_form"/>

         <field name="arch" type="xml">

            <xpath expr="//notebook/page/field/form/group/group/field[@name='product_id']" position="after">

                 -- here I want to call the template of the wesite_sale <template id="Variants" > --

            </xpath>

         </field>

Can I do this? if yes, how can I do this?