<?xml version="1.0"?>
<xpath expr="//button[@name='action_view_mrp_production_childs']" position="before">
                <button class="oe_stat_button" name="action_view_purchase_orders" type="object" icon="fa-credit-card" groups="purchase.group_purchase_user" invisible="purchase_order_count == 0">
                    <div class="o_field_widget o_stat_info">
                        <span class="o_stat_value"><field name="purchase_order_count"/></span>
                        <span class="o_stat_text">Purchases</span>
                    </div>
                </button>
            </xpath>
        