The content of an element can be changed using the XML class's instance method replace( ).
package{
import flash.display.Sprite;
publicclass Main extends Sprite{
public function Main(){
var doc:XML = <DOC>
<P ALIGN="CENTER">E4X is fun</P>
</DOC>;
doc.replace("P", <DIV>E4X is convenient</DIV>);
trace(doc);
}
}
}