ActionScript 3.0 :: Add An Object Onto The Screen?

I have some code here, works fine and everything, but I was just wondering if this code is an efficient way to add an object onto the screen. I just have mc's come on depending the amount in varFromAnotherFrame. Is there a better way to do this?
 
var someArray:Array = new Array();
for (var i:Number = 0;  i < varFromAnotherFrame; i++){ if (someArray.length < 6) {  var newMc:libraryMc = new libraryMc();
someArray[i] = newMc;  addChild(newMc);  newMc.x = -295 + (someArray.length * 80);  newMc.y = -10; } else if (someArray.length > 5 && someArray.length < 12) {  var newMc2:secondLibraryItem = new sisecondLibraryItem();  someArray[i] = newMc2;  addChild(newMc2);  newMc2.x = -775 + (someArray.length * 80);  newMc2.y = -0; }}