Drag stuffs, Actionscript 2.0 to 3.0 - actionscript-3

Question

I have done a drag and match flash stuff by using Actionscipt2.0, but now I need to change it to 3.0. After I changed it, the flash can no longer drag the stuffs, can anyone please take a look at the code to see which part I was converting it wrong. Thanks.
Actionscript 2.0 version:
stop();
var randomPositionFrame = int(Math.random()*9)+1;
content_mc.gotoAndStop(randomPositionFrame);
for(var i=1; i<=5; i++){
eval("content_mc.matching_term_"+i)._alpha = 0;
eval("content_mc.matching_term_"+i).onPress = function(){
if(this._currentframe == 1){
this.startDrag();
}
}
eval("content_mc.matching_term_"+i).onRelease = onMouseUp = function(){
this.stopDrag();
}
eval("content_mc.matching_desc_"+i)._alpha = 0;
eval("content_mc.matching_desc_"+i).onPress = function(){
if(this._currentframe == 1){
this.startDrag();
}
}
eval("content_mc.matching_desc_"+i).onRelease = onMouseUp = function(){
this.stopDrag();
}
}
Actionscript 3.0 version:
stop();
var randomPositionFrame = int(Math.random()*9)+1;
content_mc.gotoAndStop(randomPositionFrame);
for(var i=1; i<=5; i++){
this["content_mc.matching_term_"+i]._alpha = 0;
this["content_mc.matching_term_"+i].addEventListener(MouseEvent.MOUSE_DOWN,function():void {
if(this._currentframe == 1){
this.startDrag();
}
}
);
this["content_mc.matching_term_"+i].addEventListener(MouseEvent.MOUSE_UP,function():void {
stage.addEventListener(MouseEvent.MOUSE_UP, doMouseUp, false, 0, true);
function doMouseUp($evt:MouseEvent):void
{
this.stopDrag();
}
}
);
this["content_mc.matching_desc_"+i]._alpha = 0;
this["content_mc.matching_term_"+i].addEventListener(MouseEvent.MOUSE_DOWN,function():void {
if(this._currentframe == 1){
this.startDrag();
}
}
);
this["content_mc.matching_desc_"+i].addEventListener(MouseEvent.MOUSE_UP,function():void {
this.stopDrag();
}
);
}

Answer 1

In your Mouse Listener you have to get the target/object from the event. Meaning the target you applied your listener to.
Create two listener functions and apply them to your addEventListener call:
function mouseDownHandler(e:MouseEvent):void
{
var object = e.target;
object.startDrag();
}
function mouseUpHandler(e:MouseEvent):void
{
var obj = e.target;
obj.stopDrag();
}
Use addEventListener like this:
yourObj.addEventListener(MouseEvent.MOUSE_DOWN, mouseDownHandler);
yourObj.addEventListener(MouseEvent.MOUSE_UP, mouseUpHandler);

Answer 2

This won't work
this["content_mc.matching_term_"+i]
You need to talk to each object separately. So first this then content_mc.
this.content_mc["matching_term_"+i]
Might help a little.