More nodes on the treemenu?

[N0b0dy]

Hi,
i tried to add more nodes in the treemenu but it didn't work.
is it possible to add more nodes?

i tried like this:

   <item title="Thema's" font_color="0xFFFFFF">
      <item title="Dieren">         
         <item title="Huisdieren">
            <item title="Kringactiviteiten">
               <item title="Taal" link="red"></item>
               <item title="Rekenen" link="white"></item>
               <item title="Overige"  link="white"></item>
            </item>
         </item>
      </item>

Some help would be apreciated.