How to drag and drop multiple objects to specific targets? - actionscript-3

Question

I am very new to AS3. Of course just ignore the reset button for now. I know my code is big and clunky but I don't mind that for now as it is easily understood by me.
I am trying to match a yellow ball with the yellow goal and green to green and so on.
However every time I try to drag a second object I just can't, the object is stuck, I hear that is the problem with AS3/Flash and the only simple way to solve it is to drag it off the screen which is something I don't want to do.
yellowBall.addEventListener(MouseEvent.MOUSE_DOWN, mouseDowny)
redBall.addEventListener(MouseEvent.MOUSE_DOWN, mouseDownr)
blueBall.addEventListener(MouseEvent.MOUSE_DOWN, mouseDownb)
greenBall.addEventListener(MouseEvent.MOUSE_DOWN, mouseDowng)
yellowBall.addEventListener(MouseEvent.MOUSE_UP, mouseUpy)
redBall.addEventListener(MouseEvent.MOUSE_UP, mouseUpr)
blueBall.addEventListener(MouseEvent.MOUSE_UP, mouseUpb)
greenBall.addEventListener(MouseEvent.MOUSE_UP, mouseUpg)
resetButton.addEventListener(MouseEvent.CLICK, reset);
addEventListener(Event.ENTER_FRAME,enterFrameHandlerr);
function mouseDowny(event:MouseEvent):void {
yellowBall.startDrag();
}
function mouseDownr(event:MouseEvent):void {
redBall.startDrag();
}
function mouseDownb(event:MouseEvent):void {
blueBall.startDrag();
}
function mouseDowng(event:MouseEvent):void {
greenBall.startDrag();
}
function mouseUpy(event:MouseEvent):void {
yellowBall.stopDrag();
}
function mouseUpr(event:MouseEvent):void {
redBall.stopDrag();
}
function mouseUpb(event:MouseEvent):void {
blueBall.stopDrag();
}
function mouseUpg(event:MouseEvent):void {
greenBall.stopDrag();
}
function enterFrameHandlerr(event:Event):void{
if(yellowBall.hitTestObject(yellowHome)){
yellowBall.stopDrag();
yellowBall.x = int(2000);
yellowBall.y = int(60);
}
if(redBall.hitTestObject(redHome)){
redBall.stopDrag();
redBall.x = int(425);
redBall.y = int(60);
}
if(blueBall.hitTestObject(blueHome)){
blueBall.stopDrag();
blueBall.x = int(425);
blueBall.y = int(275);
}
if(greenBall.hitTestObject(greenHome)){
greenBall.stopDrag();
greenBall.x = int(55);
greenBall.y = int(275);
}
}
function reset(event:MouseEvent):void
{
yellowBall.x = int(250);
yellowBall.y = int(250);
};