<?xml version="1.0"?>
<pivot string="Revenues" sample="1">
                <field name="sale_price_untaxed" type="measure"/>
                <field name="sale_price" type="measure"/>
                <field name="event_id" type="row"/>
                <field name="product_id" type="row"/>
                <field name="event_ticket_price" invisible="True"/>
            </pivot>
        