How to access select a value choice presents inside the query.

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  I have a movie clip on stage with buttons on the left side and a uiloader side that loads an external swf file on button (thumb_01) click-target. In main movie clip, there are two buttons. 1 trigger a function to choose a wall and a 2nd trigger a function to select the roof. External file swf (movie_01.swf) has two clips 1 is a wall (mask_01) and the 2nd is roof (mask_02). Now the problem is I want to click a button to select the wall inside the external swf file to change its color. I am sure that the problem is in the path by which I try to choose a film of wall that is inside UiLoader. Can someone tell me what will be the path to trigger a function to a clip inside Uiloader?

  
  

  
  

  Here is my code for the button to select a wall or roof .

  
  

  
  

  
  

  import flash.events.MouseEvent;

  Import fl.motion.MotionEvent;

  
  

  
  

  var targetObj:Object;

  
  

  selectWall_btn.addEventListener(MouseE... selectWall);

  
  

  function selectWall(evt:MouseEvent):void {}

  targetObj = uiloader.movie_01.mask_01; <-I think the problem is in this way...

  trace ("wall is selected!');

  
  

  }

  
  

  
  

  
  

  
  

  Here's the code for uiloader =...

  
  

  
  

  Import fl.containers.UILoader;

  
  

  
  

  Object (this). slider_mc.thumb_01.addEve,... loadMovie_01);

  
  

  function loadMovie_01(evt:MouseEvent):void {}

  
  

  trace ("film is loading!");

  
  

  var uiLoader:UILoader = new UILoader();

  uiLoader.source = ' movies/movie_01.swf ";

  uiLoader.scaleContent = false;

  uiLoader.x = 291;

  uiLoader.y = 19;

  addChild (uiLoader);

  
  

  
  

  
  

  uiLoader.addEventListener(Event.COMPLE... completeHandler);

  function completeHandler(event:Event) {}

  trace ("number of bytes loaded:" + uiLoader.bytesLoaded);

  }

  }

  Error is the following...

  Scene 1, Layer 'Forth', frame 1, line 43

  1120: access of undefined property uiLoader.

  
  

  
  

  Can someone help me?

  Part of the problem is due to declare the uiLoader inside a function.  When you do that limit its scope within this function.  You must declare outside any function if you need to access it in more than one function.

  import flash.events.MouseEvent;

  Import fl.motion.MotionEvent;

  var uiLoader:UILoader;

  var targetObj:Object;

  Other issues I consider the line that you point.  This is not spelling the name, with a small 'l '. Also, if you want to target that contains the UILoader, you should target its 'content' property, as in...

  targetObj = uiLoader.content.mask_01

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