To replace an XML element with new elements, we assign either an XMLList or XML object to that element
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.P = <DIV>E4X is convenient</DIV>;
trace(doc.P);
}
}
}