Who are you? var flex

/**
 * Copyright shohei909 ( http://wonderfl.net/user/shohei909 )
 * MIT License ( http://www.opensource.org/licenses/mit-license.php )
 * Downloaded from: http://wonderfl.net/c/7Zoy
 */

<?xml version="1.0" encoding="utf-8"?>
<!--see http://wonderfl.net/c/A11h-->
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" creationComplete="start()">
    <mx:TextArea id="text" text="test" width="405" height="405"/>
    <mx:Script>
        <![CDATA[
            private function start():void{
                var flashVars:Object = Application.application.parameters;
                //flex 4 
                //var flashVars:Object = FlexGlobals.topLevelApplication.parameters;
                
                
                
                text.htmlText = "This is /" + flashVars["appId"]; 
                //text.htmlText += "<br/>apiKey:" + flashVars["open_api_key"]; 
                //text.htmlText += "<br/>???:" + flashVars["key"]; 
                
                text.htmlText += "<br/><br/>your name: " + flashVars["viewer.displayName"]; 
                text.htmlText += "<br/>your icon: " + flashVars["viewer.iconURL"]; 
                text.htmlText += "<img src='" + flashVars["viewer.iconURL"] +"'/>"
            }
        ]]>
    </mx:Script>
</mx:Application>