<?xml version="1.0"?>
<filter name="my_sale_orders_filter" position="after">
                <separator/>
                <filter string="To Invoice" name="to_invoice" domain="[('invoice_status','=','to invoice')]"/>
                <filter string="To Upsell" name="upselling" domain="[('invoice_status','=','upselling')]"/>
                <separator/>
                <filter string="Order Date" name="order_date" date="date_order"/>
            </filter>
        