I try to hide a button with this:

        <record id="hr_timesheet_sheet_form_inv_1" model="ir.ui.view">
            <field name="name">hr.timesheet.sheet.form_inv_1</field>
            <field name="model">hr_timesheet_sheet.sheet</field>
            <field name="inherit_id" ref="hr_timesheet_sheet.hr_timesheet_sheet_form"/>
            <field name="arch" type="xml">
                <xpath expr="//button[@name='647']" position="attributes">
                    <attribute name="invisible">True</attribute>
                </xpath>
            </field>
        </record>

my problem is, that I have to give it the actionnumber.

How can I make this dynamic, so I don't need the actionnumber. When I use this module in a other odoo installation they have an other number there and so the module doesn't know what button to hide. [@name='647']