How to get Digester handle recursive childnodes?

Hello!

I try to get a grip of Digetser from apache.
But I can get it to handle recursive childnodes.
If you try the code below. You will se this output:
--- Elements ---
--- attributes ---
        Element: =o'1'

--- attributes ---
        Element: =o'2'

--- attributes ---
        Element: =o'3'

--- attributes ---
        Element: =o'4'

--- attributes ---
        Element: =o'6'
       
If you uncomment the  //Add Child Elements recusive - part it do not handles the child nodes.
If you have any idea how to get Digester to get the childnodes as well please let me know.
I can not figure it out.
Best regards
Fredrik

<?xml version="1.0" encoding="UTF-8" ?>
<data>
    <e o="0">
        <e o="1"/>
        <e o="2"/>
        <e o="3"/>
        <e o="4">
            <e o="5"/>
        </e>
        <e o="6"/>
    </e>
</data>


package digestertester;
import org.apache.commons.digester.*;
import java.io.File;
import java.util.Vector;
public class ElementDigester {

  public static void main( String[] args ) {

      try {
        Digester digester = new Digester();
        digester.setValidating( false );
        digester.setRules(new ExtendedBaseRules());
        digester.addObjectCreate( "data", Data.class );
        digester.addObjectCreate( "data/e/e", Element.class );
        digester.addSetProperties( "data/e/e", "o", "o" );
       
        //Add Child Elements recusive
        //digester.addObjectCreate( "!*/e/e", Element.class );
        //digester.addSetProperties( "!*/e/e", "o", "o" );
        //digester.addSetNext( "!*/e/e", "addChildElement" );
       
        digester.addSetNext( "data/e/e", "addElement" );
        File input = new File( "D:/Fredrik/Javalabb/digestertester/xml/4.xml" );
        Data data = (Data)digester.parse( input );
        System.out.println( data.toString() );

      } catch( Exception exc ) {
        exc.printStackTrace();
      }
  }
}

package digestertester;
import java.util.Vector;
public class Data
{
    private Vector elements;

    public Data()
    {
        elements = new Vector();
    }

    public void addElement(Element element) {
        elements.add(element);
    }

    public String toString() {
      String newline = System.getProperty( "line.separator" );
      StringBuffer buf = new StringBuffer();
      buf.append( "--- Elements ---" ).append( newline );
      for( int i=0; i<elements.size(); i++ ){
        buf.append( elements.elementAt(i) ).append( newline );
      }
      return buf.toString();
    }
}

package digestertester;
import java.util.Vector;
public class Element {
  private String o;
  private Vector childElements;
  public Element() {childElements = new Vector();}
  public void setO( String o ) { this.o = o; }

  public void addChildElement( Element element ) {
      childElements.addElement( element );
  }

  public String toString() {
      String newline = System.getProperty( "line.separator" );
      StringBuffer buf = new StringBuffer();
      buf.append( "--- attributes ---" ).append( newline );
      buf.append( "\t\tElement: =o'" + o + "'").append( newline );
      if(childElements.size() > 0)
      {
        buf.append( "--- childelements ---" ).append( newline );
        for( int i=0; i<childElements.size(); i++ ){
          buf.append( childElements.elementAt(i) ).append( newline );
        }
      }
      return buf.toString();
  }
}