How to add informations to my xml - AS3 - AIR - actionscript-3

Question

I'm loading an xml file name animals.xml
var urlLoader = new URLLoader();
urlLoader.addEventListener(Event.COMPLETE,onXMLLoaded);
var file:File = File.documentsDirectory.resolvePath("animals.xml");
var stream:FileStream = new FileStream();
urlLoader.load(new URLRequest(file.url));
function onXMLLoaded(e:Event):void{
xml = new XML(e.target.data);
trace(xml..animal.#name[2]);
}
when I click on a button, it modifies the name of the cat by Garfield
click_btn.addEventListener(MouseEvent.CLICK, btn_clicked, false, 0, true);
function btn_clicked(event:MouseEvent):void {
modifyName();
}
function modifyName():void{
xml..animal.#name[2] = "GARFIELD";
stream.open(file, FileMode.WRITE);
stream.writeUTFBytes(xml);
stream.close();
}
How can I, now, add new information to my xml ?
My XML is build like that :
<?xml version="1.0" encoding="UTF-8"?>
<animals>
<animal type="dog" name="Fido" age="2">Fido is a good dog.</animal>
<animal type="dog" name="Ralph" age="1">Ralph is brown.</animal>
<animal type="dog" name="Brian" age="1">Brian is Ralph's brother.</animal>
<animal type="cat" name="Charlie" age="3">Charlie likes fish.</animal>
<animal type="rabit" name="Gulper" age="3">Gulper does not want to be eaten.</animal>
</animals>
How do I do to add a new line ?
For example :
animal type ="turtle"
name "Caroline"
age = "5"
Caroline is a turtle
So, in the results, I'll have :
<animal type="dog" name="Fido" age="2">Fido is a good dog.</animal>
<animal type="dog" name="Ralph" age="1">Ralph is brown.</animal>
<animal type="dog" name="Brian" age="1">Brian is Ralph's brother.</animal>
<animal type="cat" name="Charlie" age="3">Charlie likes fish.</animal>
<animal type="rabit" name="Gulper" age="3">Gulper does not want to be eaten.</animal>
<animal type="turtle" name="Caroline" age="5"> Caroline is a turtle </animal>
</animals>

Answer 1

You need to add a new child node to your XML. Something like that:
function addAnimal(target:XML, type:String, name:String, age:int, comment:String):void
{
target.appendChild(<animal type={type} name={name} age={age}>{comment}</animal>);
}
The idea behind curly brackets is to simplify XML node notation. Should be quite transparent by itself, but if you are curious, you may start looking it up from here.
Then, you free to add as many animals as you need:
addAnimal(xml, "turtle", "Caroline", 5, "Caroline is a turtle");
addAnimal(xml, "peacock", "Lord Chen", 25, "Must build a cannon");