I am trying to replace a button in a sales order form to add a simple confirmation message using the confirm tag. My custom view is not replacing the button however and I am not exactly sure why and I am not super familiar with view inheritance. It does appear in the list of views inside Odoo and is successfully inheriting the sales view order form.
The custom view
<odoo>
<template id="sales_form_with_confirm" name="Sales Form with Confirm" inherit_id="sale.view_order_form">
<xpath expr="//button[@name='action_cancel']" position="replace">
<button name="action_cancel" states="draft,sent,sale" type="object" string="Cancel" confirm="Are you sure?"></button>
</xpath>
</template>
</odoo>
