# Error #1010: A term is undefined and has no properties, scope issue?

**URL:** https://forum.kirupa.com/t/error-1010-a-term-is-undefined-and-has-no-properties-scope-issue/315073
**Category:** flash
**Created:** [October 16, 2010, 11:06pm UTC](https://forum.kirupa.com/t/error-1010-a-term-is-undefined-and-has-no-properties-scope-issue/315073 "2010-10-16T23:06:08Z")
**Posts on this page:** 1
**Page:** 1

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### Author: ![cermunnos](https://avatars.discourse-cdn.com/v4/letter/c/ebca7d/32.png) [@cermunnos](https://forum.kirupa.com/u/cermunnos)
#### Post date: [October 16, 2010, 11:06pm UTC](https://forum.kirupa.com/t/error-1010-a-term-is-undefined-and-has-no-properties-scope-issue/315073/1 "2010-10-16T23:06:08Z")

</div>

Hi, I’m having trouble getting to the bottom of this error. The debugger says my class is undefined. Wonder if you might have some ideas, I cannot manipulate the properties in side the Ball class I have created in my main document class.

May be a scope error of some kind or a problem with my Ball class declaration.

```auto
/* Main Document Class*/
package {
	
import flash.geom.ColorTransform;
import flash.display.MovieClip;
import fl.motion.Color;
import flash.display.*;
import flash.events.Event;

//-------------------------------------------------------------------
//-- This class performs the animation in the main canvas. ----------
//-------------------------------------------------------------------
public dynamic class Main extends MovieClip {
  private var max,num,cur,mxm,mym:int = 100; // current ball and mouse x y & number of balls
  //private var Ball[] ball = new Ball[max]; // array of balls for interaction purposes
  private var massArray:Array = new Array();
  //Ticker tick;
  private var clearAll:Boolean;
  // The following are some "physical" properties. Each property
  // has a value and a control. The values are updated once per
  // animation loop 
  public var g,mg,f,r:Number;
  public var trc,col,mu,wr,sm,fi:Boolean;
  public var xsize,ysize:int;
  //Scrollbar grav,mgrav,fric,rest;
  //Checkbox trace,collide,mush,wrap,smooth,filled;

[COLOR="RoyalBlue"]private var mass1,mass2,mass3:Ball; // a few balls just for testing[/COLOR]
public var colorYellow:Color=new Color();
public function Main():void {
		 var myMC:MovieClip = new MovieClip();
		addChild(myMC);
		var _stage:Stage=myMC.stage;
		var starBackground:Stars = new Stars(_stage);
    	//Add three balls
[COLOR="royalblue"] var mass1:Ball = new Ball(100,12,colorYellow,100,250,4,2,_stage,myMC); 
		mass1.name = "m1";
		_stage.addChild(mass1);[/COLOR]
	 	var mass2:Ball = new Ball(100,15,colorYellow,325,225,-5.45,1,_stage,myMC); 
		mass2.name = "m2";
	  	var mass3:Ball = new Ball(100,22,colorYellow,400,50,0.45,1,_stage,myMC); 
		mass3.name = "m3";
		addEventListener(Event.ADDED_TO_STAGE, moveobj);
  }

public function moveobj(event:Event) {

//error Error #1010: A term is undefined and has no properties
[COLOR="Red"] **mass1._x+=1** ; **// error points to here** [/COLOR]

}//end function
}//class
}//package

```