Drag and Drop slide back Animation

Hello I am working on a project for work and I have run into a bump in the road. I am a noobie when it comes to programming and have been following a tutorial for a drag and drop game/question quiz for students. What I have so far is I am able to drag and drop my wanted objects to a specific location without any problem. The issue that I am running across is when they drag the object to the wrong spot, I want it to do a nice slide back to its original location, rather than just a quick jump back and there it is. This is what I have for code so far.

import flash.display.MovieClip;
import flash.events.MouseEvent;

var dragArray:Array = [square, circle];
var matchArray:Array = [squareMatch, circleMatch];
var currentClip:MovieClip;

var startX:Number;
var startY:Number;

for (var i:int = 0; i < dragArray.length; i++) {
dragArray.buttonMode = true;
dragArray.addEventListener(MouseEvent.MOUSE_DOWN, item_onMouseDown);
matchArray.alpha = .2;
        

}

function item_onMouseDown(event:MouseEvent):void{
currentClip = MovieClip(event.currentTarget);
startX = currentClip.x;
startY = currentClip.y;
addChild(currentClip);
currentClip.startDrag();
stage.addEventListener(MouseEvent.MOUSE_UP, stage_onMouseUp);
}
function stage_onMouseUp(event:MouseEvent):void{
stage.removeEventListener(MouseEvent.MOUSE_UP, stage_onMouseUp);
currentClip.stopDrag();
var index:int = dragArray.indexOf(currentClip);
var matchClip:MovieClip = MovieClip(matchArray[index]);
if(currentClip.hitTestObject(matchClip)) {
  currentClip.x = matchClip.x;
  currentClip.y = matchClip.y;
 
  currentClip.removeEventListener(MouseEvent.MOUSE_DOWN, item_onMouseDown);
  currentClip.buttonMode = false;
} else {
currentClip.x = startX;
currentClip.y = startY;
}

}