Setting the text content of an Entity

Hi all
In some java code I'm writing, if I set the text content of an element, it wipes out any sub-elements that were there before. I just want to confirm that this is correct behavior and that I am doing this correctly. If an element has text, it can't have other children, correct?
code from my TreeModel is below
     public void valueForPathChanged(TreePath arg0, Object arg1) {
          Object o = arg0.getLastPathComponent();
          if (o instanceof Attr) {
               Attr attr = (Attr) o;
               attr.setValue(arg1.toString());
               mTree.updateUI();
          if (o instanceof Element) {
               Element el = (Element) o;
               //el.setNodeValue(arg1.toString());
               el.setTextContent(arg1.toString());
               mTree.updateUI();
          }

I was wrong you can have text and data I had just screwed up my tree model :)

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Setting the text content of an Entity

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