Hi
I have done the following so that I can modify the tree view of the 'search more...' popup: This is my new Tree view, I just added two new fields that I created to verify if my module works(prhalfc,prhighc):

  <record id="new_tree_view" model="ir.ui.view">
        <field name="name">new.product.tree</field>
        <field name="model">product.product</field>
        <field name="arch" type="xml">
            <tree string="Products">
               <!-- <field name="default_code"/> --> 
                <field name="name"/>
                <field name="qty_available"/>
                <field name="virtual_available"/>
                <field name="lst_price"/>
                <field name="prhighc"/>
                <field name="prhalfc"/>
            </tree>
        </field>
    </record

And the I made the following inhiratance of the sale.view_order_form:

  <record id="new_tree_in_sale_order" model="ir.ui.view">
       <field name="name">new_tree_in_sale_order</field>
       <field name="model">sale.order</field>
       <field name="type">form</field>
       <field name="inherit_id" ref="sale.view_order_form"/>
       <field name="arch" type="xml">   
          <xpath expr="//field[@name='product_id']" position="attributes">
                <attribute name="context">{'tree_view_ref':'product.new_tree_view'}</attribute>
         </xpath>
        </field>
   </record>

But it seems like the part : <attribute name="context">{'tree_view_ref':'product.new_tree_view'}</attribute> does nothing because the popup does not change

Could you give me some suggestions??

Thanks in advance!!