Losing variable values between functions...

Question

hi!
I'm trying to do something simple in actionscript as simple as this:
- Create a variable: var urlVideo:String;
- Use that variable inside a function and give it a value: urlVideo = videoElemento.url.text();
- Then create a new variable and give it the urlVideo value: var url:String = urlVideo;
My problem is that urlVideo loses it's value
Why is that happening?
Here's my code:
var idVideo:String = "12";
var urlVideo:String;
var xmlPath:String = "videos.xml";
var xml:XML;
var loader = new URLLoader();
loader.load(new URLRequest(xmlPath));
loader.addEventListener(Event.COMPLETE, xmlLoaded);
function xmlLoaded(e:Event):void
if ((e.target as URLLoader) != null )
xml = new XML(e.target.data);
xml.ignoreWhitespace = true;
getVideo(xml);
function getVideo(videosInput:XML):void
var listaVideos:XMLList = videosInput.Video;
for each (var videoElemento:XML in listaVideos)
if(videoElemento.id.text() == idVideo)
urlVideo = videoElemento.url.text();
trace(urlVideo); //has a value
break;
var url:String = urlVideo; //the urlVideo values is null !!
What am i doing wrong?
Can anyone help me?

Answer 1

The above post is correct providing the way you displayed the code in your original post is the same way you have it in your program
function getVideo(videosInput:XML):void
var listaVideos:XMLList = videosInput.Video;
for each (var videoElemento:XML in listaVideos)
if(videoElemento.id.text() == idVideo)
urlVideo = videoElemento.url.text();
trace(urlVideo); //has a value
break;
var url:String = urlVideo;  this line occurs outside the function which means that until getVideo is called urlVideo will always be null because its never set until getVideo actualy gives it a value.
zeroskillz method will set the url to play right inside the function which is a good way to organize.. keep behaviors together.
now if you placed url= urlvideo before the end of the function you would have seen a trace like thus:
function getVideo(videosInput:XML):void
var listaVideos:XMLList = videosInput.Video;
for each (var videoElemento:XML in listaVideos)
if(videoElemento.id.text() == idVideo)
urlVideo = videoElemento.url.text();
trace(urlVideo); //has a value
break;
var url:String = urlVideo  //has value