Drag 'n drop problem using function

1

I have a movie clip called al_mc in there i have a drag & drop and it works

 
on (release) {
 stopDrag();
 _root.stopThis(13);
}

then on the main timeline i have this function, and it keeps telling me that it is wrong. Any idea what i can do to fix the problem?


function stopThis (aNum) {
  trace (elementNum[aNum])
 if (_droptarget == "/"+elementNum[aNum]+"_mc") {
  fadeOut(22);
 } else {
  reponse = "Sorry, try again"
 }
}
2

Mind if i take a look at your fla? i think im missing out on some important info.