HELP WITH AS3 Removing Movie Clip

Question

every code i try in the action script to remove a movie clip off of the stage does not work. HELPPPP.

Answer 1

well this is my code to bring it onto the stage
import flash.events.MouseEvent;
pills.addEventListener(MouseEvent.CLICK, arrest)
function arrest(pEvent:MouseEvent):void{
          if(pEvent.target==pills){
                    var carimage: policecar= new policecar();
                    carimage.x=0;
                    carimage.y=0;
                    this.addChild(carimage);
and the remove is under a different clip
stop();
bars1.addEventListener(MouseEvent.ROLL_OVER, barsout)
function barsout(pEvent:MouseEvent):void{
          if(pEvent.target==bars1){
                    this.removeChild(carimage);
even when i add the latter code into the origininal code above it tells me access of undefined property (carimage)