Flash Programming ActionScript3, double import swf to the main Stage from another class - actionscript-3

Question

Let me explain my situation:
We have a file named Main.fla which links to the class MAIN( it's included in the MAIN.as file). I also have a secondary User.as file with a User class.
I managed to import a classic swf button to my stage from the User.as class but i'm finding trouble on adding the pop up window, when the button is clicked. Here are the codes:
MAIN.as
import flash.display.*;
import flash.net.*;
import flash.events.*;
import User; //Importing our User class
public class MAIN extends MovieClip
{
public function MAIN()
{
var k = new User();
k.logocons(this); //This function is made on User class and
//it takes a stage:Object as definition
}
}
User.as
import flash.display.*;
import flash.net.*;
import flash.events.*;
public class User extends MovieClip
{
var myLoader:Loader = new Loader();
public function User()
{
var url:URLRequest = new URLRequest("C:/Project/Button.swf");
myLoader.contentLoaderInfo.addEventListener(Event.COMPLETE, swfLoaded);
myLoader.load(url);
}
function swfLoaded(event:Event):void
{
myLoader.x = 50;
myLoader.y = 50;
}
public function logocons(stage:Object)
{
stage.stop();
stage.addChild(myLoader);
}
}
This works normally so far When i test the file the Button works perfectly
What i want now is when the button is clicked to show at my MAIN.Stage a pop up window which is also in the same folder named PopUp.swf.
I tried really many things but i couldn't find how i can access the MAIN.stage from another class.
Thanks in advance

Answer 1

User.as
import flash.display.*;
import flash.net.*;
import flash.events.*;
import fl.motion.MotionEvent;
public class User extends MovieClip
{
var myLoader:Loader = new Loader();
private var _mainStage:Stage;//MAIN.stage
public function User()
{
var url:URLRequest = new URLRequest("C:/Project/Button.swf");
myLoader.contentLoaderInfo.addEventListener(Event.COMPLETE, swfLoaded);
myLoader.load(url);
}
function swfLoaded(event:Event):void
{
myLoader.x = 50;
myLoader.y = 50;
}
public function logocons(stage:Object)
{
_mainSage = (stage as MovieClip).stage;// now you can use _mainStage anywhere on User class.
stage.stop();
stage.addChild(myLoader);
}
private function onButtonClick(e:MouseEvent){
//ex. _mainSage.addChild(popWindows);
}
}