Update and compile an external SWF (add image)

Hi,

I'm trying to find a way to load an external swf file then make a change to into and 'save it'.

The basic communication to the external swf is simple enough to setup, but I get stuck on the compiling part.

I looked into this: claus/as3swf · GitHub

But it keeps on giving me a save to location box.

I tried something like this but not getting very far:

import flash.filesystem.File;
import flash.filesystem.FileStream;
import flash.filesystem.FileMode;


var ba :ByteArray
var my_url1: URLRequest = new URLRequest("ParentFile.swf");
var urlloader: URLLoader = new URLLoader(my_url1);


urlloader.dataFormat = URLLoaderDataFormat.BINARY;


urlloader.addEventListener(Event.COMPLETE, function (event: Event): void {
  ba  = URLLoader(event.target).data as ByteArray;
  //trace(ba)

  save();

});




function save ():void{

  var newfile: File = File.desktopDirectory.resolvePath(getFilename()+"newFile.swf");
  trace(newfile.url)
  var fileStream: FileStream = new FileStream();
  fileStream.open(newfile, FileMode.WRITE);
  fileStream.writeBytes(ba);

  fileStream.close();
}


// 
//var myUrl:String = unescape(LoaderInfo(this.root.loaderInfo).url);


trace(getFilename())


function getFilename():String
  {
  var filename:String;
  var myUrl:String = unescape(LoaderInfo(this.root.loaderInfo).url);
  filename = myUrl.substring(myUrl.lastIndexOf("/") + 1,myUrl.lastIndexOf("."));
  filename = myUrl.slice(0, -filename.length)

  return filename;
  }

Any help is appreciated!