1061: Call to a possibly undefined method addChild through a reference with static ty

programming flash
1

I am a newbee and just starting to learn about AS3. Copied some ideas and tried to paint a single particle on the stage for starters. No success! I get this…

[COLOR=Red]1061: Call to a possibly undefined method addChild through a reference with static type flash.display:DisplayObject.[/COLOR]

In an “Particle.as” file I have this code…

**[COLOR=Blue]package
{

import flash.display.*;

public class Particle extends MovieClip
{

    public function Particle ( spriteclass : Class, targetclip : DisplayObject, xpos : Number, ypos : Number)
    {

    // instantiate a new particle graphic
    if(spriteclass) {
    
    clip = new spriteclass();
    
    // and add it to the stage
    targetclip.addChild(clip);
    
    // and set its position
    clip.x = xpos;
    clip.y = ypos;

    }
    public function setVel(xvel:Number,yvel:Number)
    {
        xVel = xvel;
        yVel = yvel;
    }
    public function update()
    {
        clip.x = xVel;
        clip.y = yVel;
    }
    public function destroy():void
    {
        clip.parent.removeChild(clip);
    }
}

}[/COLOR]**

Also, on the stage layer 1 frame 1 I have this code…

[COLOR=Indigo]**var particle = new Particle(spark, this, 275,200);
**[/COLOR]
What is wrong here? And keep in mind that I am a just starting up with AS3…

TIA

DKean