added_to_stage event not firing

programming flash
1

I’ve a class file named MainGraphics. In my class file I’ve an eventlistener but it’s not firing.

package {
    
    import flash.events.Event;
    import flash.events.KeyboardEvent;
    import flash.text.TextField;
    import flash.text.TextFormat;
    import flash.display.MovieClip;
    import flash.display.Sprite;
    import flash.display.Graphics;
    
    import com.greensock.layout.*;
    
    public class MainGraphics extends Sprite
    {
        
        GlobalVarContainer.vars.tempo_txt = new TextField();
        GlobalVarContainer.vars.g = new Sprite;
        
        public function CreateArea()
        
        {
            // constructor code
            
            this.addEventListener(Event.ADDED_TO_STAGE, init);
            
        }
        
        public function init(event:Event)
        {
            trace(stage);
            this.removeEventListener(Event.ADDED_TO_STAGE, init);
            
            // Draw main area
            
            GlobalVarContainer.vars.g.graphics.lineStyle(1, 0x333333, 1);
            GlobalVarContainer.vars.g.graphics..beginFill(0x0099FF);
            GlobalVarContainer.vars.g.graphics..moveTo(0, 0);
            GlobalVarContainer.vars.g.graphics..lineTo(350, 0);
            GlobalVarContainer.vars.g.graphics..lineTo(350, 280);
            GlobalVarContainer.vars.g.graphics..lineTo(0, 280);
            GlobalVarContainer.vars.g.graphics..lineTo(0, 0);
            GlobalVarContainer.vars.g.graphics..endFill();
            GlobalVarContainer.vars.g.width = 350;
            GlobalVarContainer.vars.g.height = 280;

            // Create a textfield and a textformat
            var format:TextFormat = new TextFormat("Arial", 20, 0x333333, "bold");
            format.size = 30;
            
            
            GlobalVarContainer.vars.tempo_txt.border = true;
            GlobalVarContainer.vars.tempo_txt.borderColor = 0x333333;
            GlobalVarContainer.vars.tempo_txt.background = true;
            GlobalVarContainer.vars.tempo_txt.backgroundColor = 0xffffff;
            GlobalVarContainer.vars.tempo_txt.maxChars = 3;
            GlobalVarContainer.vars.tempo_txt.mouseEnabled = true;
            GlobalVarContainer.vars.tempo_txt.multiline = false;
            GlobalVarContainer.vars.tempo_txt.selectable = true;
            GlobalVarContainer.vars.tempo_txt.text = "120";
            GlobalVarContainer.vars.tempo_txt.textColor = 0x333333;
            GlobalVarContainer.vars.tempo_txt.wordWrap = false;
            GlobalVarContainer.vars.tempo_txt.type = "input";
            GlobalVarContainer.vars.tempo_txt.width = 30;
            GlobalVarContainer.vars.tempo_txt.height = 30;
            GlobalVarContainer.vars.tempo_txt.defaultTextFormat = format;
            GlobalVarContainer.vars.tempo_txt.name = "GlobalVarContainer.vars.tempo_txt";

            GlobalVarContainer.vars.tempo_txt.setTextFormat(format);
             GlobalVarContainer.vars.tempo_txt.x =  (GlobalVarContainer.vars.g.width -  GlobalVarContainer.vars.tempo_txt.width) * .5;
             GlobalVarContainer.vars.tempo_txt.y = (GlobalVarContainer.vars.g.height  - GlobalVarContainer.vars.tempo_txt.height) * .5;
            GlobalVarContainer.vars.g.addChild(GlobalVarContainer.vars.tempo_txt);
            
            this.addChild(GlobalVarContainer.vars.g);
            
            var area:AutoFitArea = new AutoFitArea(this, 99, 67, 350, 216, 0xffffff);
            area.attach(GlobalVarContainer.vars.g);
            area.preview = true;
        }

    }
    
}

When I set CreateArea text to MainGraphics, I’m getting error 1061.

Here’s my fla code:

var mGraphics:MainGraphics = new MainGraphics();
mGraphics.CreateArea();