[flexcoders] Tree displays xml node value, can I avoid that? how?

[fourctv]

I have a Tree control whose dataProvider gets an xml like:
 <nodes>
   <node label="a">
      <node label="a.1"/>
      <node label="a.2">data for node a.2</node>
      <node label="a.3"/>
   </node>
   <node label="b">
      <node label="b.1"/>
      <node label="b.2"/>
    </node>


The rendered tree looks like:
   [+] a
       a.1
       [+] a.2
          data for node a.2
       a.3
   [+] b
       b.1
       b.2
 

You see, the data value for element "a.2" gets displayed as a tree node.

Can I avoid that? I could not find any Tree property that allows me to filter 
out element 
data values from being rendered.

TIA
julio