Hi,

Do you know why it is not working ? I mean why class="oe_highlight" doesnt work in tree mode?

<group col="2" colspan="2" >
    <separator string="Separator" colspan="2" />
    <field name="field_lines" colspan="2" nolabel="1" readonly="1" >
        <tree editable="bottom" >
                <field name="somefield />
                 <button type="object" string="String" name="button_method" class="oe_highlight" />
         </tree>
     </field>
</group>