Hey, so we have added a state system to an existing module in our odoo installation.

However i cant seem to make the approve button only appear if its in draft with a name set.

Here is what ive tried:

    <xpath expr="//div[@name='button_box']/.." position="before">

        <header>

            <xpath expr="//field[@name='name']">

              <button name="action_approve_contract" type="object" string="Approve Contract" state="draft" confirm="Please make sure you have checked all the information on this contract before approving it." domain="[('name', '!=', False)]"/>

              <button name="action_contract_send" type="object" string="Send by Email" groups="base.group_user" state="approved"/>

            </xpath>

            <field name="x_state" widget="statusbar" statusbar_visible="draft,approved,sent,cancel,expired"/>

        </header>

    </xpath>

The result of this is that both of the buttons arent showing at all, regardless of state and name field data.