<xpath expr="//button[@name='action_invoice']" position="attributes">
<attribute name="invisible">1</attribute>
</xpath>
+ <xpath expr="//button[@string='Reprint']" position="attributes">
+ <attribute name="string">Print Receipt</attribute>
+ </xpath>
<xpath expr="//field[@name='partner_id']" position="attributes">
<attribute name="required">1</attribute>
</xpath>