OMG ... i have to escape html myself ?

<field name="arch" type="xml">

<xpath expr="//page[1]" position="before">

<page name="project_stages" string="Stages">

<field name="type_ids">

<tree editable="bottom" delete="false" create="false">

<field name="name" edit="false" create="false"/>

<field name="auto_assign_user_id" widget="many2onebutton" edit="true"/>

</tree>

</field>

</page>

</xpath>

</field>