ActionScript 3.0 :: Box Creation - Correct Way For Checking Error?

I'm just wondering if this is the "right" way to do the error catching. I have a program that creates a random number of squares (up to 25), but no more, and usually less (like I said, random number). Due to the fact that there's a random number of them, I create an array ahead of time. Only some of the squares in the array get used, and the others sit there and aren't added to the stage. Anyways, at the end of the box creation, the program goes back through and deletes all of the boxes in a loop:

Code:
for(var i:uint = 0; i < boxArray.length; i++){
try{
removeChild(boxArray[i]);
}catch(e:Error){}}

It seems to work okay, but I just want to know if this is the correct way to check for errors. If I put a trace in the catch block, it catches the squares that aren't in the display list, obviously, because they aren't there to remove.