ActionScript 3.0 :: Returning Correct Name From A Code Created Movie Clip

I am an AS3 n00b with hopefuly a simple question I am designing a simple game in flash. This code creates an array of movie clips and asigns a picture to each one. It is a map screen. What I need is when I click on one of the created movie clips, I need it to return either the index of the clip in the array or the name of the clip. Basicaly anything I can use to tell them apart in the code. Here is the code:

[Code]...

Now all this works fine, it creates the map and assigns the correct picture and places them in the correct X,Y position and it is the correct grid of 27x27 squares. The problem is with the name, when I click on the movie clip, it returns "Instance2" or "Instance5" or whatever. It starts with 2 and then increases each number by 3 for each clip, so the first one is 2, then 5 then 8 and so on. This is no good. I need it to return the name that I assigned it. If I put the code in trace(MapSquare[1]) it will return the name "MapSquare1" so I know the name was assigned, but it isnt returning.