Rather than drag the image, i want to drag the “camera” so to speak, over the image to create the illusion that the image is staying still, if this makes sense

1120: Acces of undifined property area_mc.

Can someone explain me how I can fix this…

speak_mc.addEventListener(MouseEvent.MOUSE_DOWN, pickUp);
speak_mc.addEventListener(MouseEvent.MOUSE_UP, dropIt);
live_mc.addEventListener(MouseEvent.MOUSE_DOWN, pickUp);
live_mc.addEventListener(MouseEvent.MOUSE_UP, dropIt);
play_mc.addEventListener(MouseEvent.MOUSE_DOWN, pickUp);
play_mc.addEventListener(MouseEvent.MOUSE_UP, dropIt);
cook_mc.addEventListener(MouseEvent.MOUSE_DOWN, pickUp);
cook_mc.addEventListener(MouseEvent.MOUSE_UP, dropIt);
drink_mc.addEventListener(MouseEvent.MOUSE_DOWN, pickUp);
drink_mc.addEventListener(MouseEvent.MOUSE_UP, dropIt);
listen_mc.addEventListener(MouseEvent.MOUSE_DOWN, pickUp);
listen_mc.addEventListener(MouseEvent.MOUSE_UP, dropIt);
wear_mc.addEventListener(MouseEvent.MOUSE_DOWN, pickUp);
wear_mc.addEventListener(MouseEvent.MOUSE_UP, dropIt);
learn_mc.addEventListener(MouseEvent.MOUSE_DOWN, pickUp);
learn_mc.addEventListener(MouseEvent.MOUSE_UP, dropIt);

function pickUp(event:MouseEvent):void {
event.target.startDrag(true);
reply_txt.text = “”;
event.target.parent.addChild(event.target);
startX = event.target.x;
startY = event.target.y;
}
function dropIt(event:MouseEvent):void {
event.target.stopDrag();
var myTargetName:String = “target” + event.target.name;
var myTarget:DisplayObject = getChildByName(myTargetName);
if (event.target.dropTarget != null && event.target.dropTarget.parent == myTarget){
reply_txt.text = “Good Job!”;
event.target.removeEventListener(MouseEvent.MOUSE_DOWN, pickUp);
event.target.removeEventListener(MouseEvent.MOUSE_UP, dropIt);
event.target.buttonMode = false;
event.target.x = myTarget.x;
event.target.y = myTarget.y;
counter++;
} else {
reply_txt.text = “Try Again!”;
event.target.x = startX;
event.target.y = startY;
}
if(counter == 8){ //pocet spravnych umiestneni
reply_txt.text = “Congrats, you’re finished!”;
}
}

speak_mc.buttonMode = true;
live_mc.buttonMode = true;
play_mc.buttonMode = true;
cook_mc.buttonMode = true;
drink_mc.buttonMode = true;
listen_mc.buttonMode = true;
wear_mc.buttonMode = true;
learn_mc.buttonMode = true;

I want new tab that show points how many are correct and how many are incorrect.
I want to add check button with function that show new little window with results (correct and wrong points or answers). Function with counter of correct and incorrect answers.
Thanks