How do I add multiple items to a hitTestObject?

Question

I have a horizontally scrolling flying game involving a character and diferent types of food moving across the screen from right to left which the character has to collect ("hit"). I have the hitTestObject working for 2 different food movieclips with one item belonging to a healthyList, and the other to a junkList.
The problem is I don't know how to add more items (movieclips) to each of the lists, so that I have for example 6 items in the healthyList and 4 items in the junkList.
Below is the code in my Engine.as file. The red highlighted text is the code that creates the problem. I thought that I just needed to add this line in order to add another item to the "healthyList" of food types, but I obviously have it in the wrong place or have the wrong code completely.
package
    import flash.display.MovieClip;
    import flash.display.Stage;
    import flash.events.Event;
    public class Engine extends MovieClip
        private var numClouds:int = 5;
        private var healthyList:Array = new Array();
        private var junkList:Array = new Array();
        private var myFlying:Flying;
        public function Engine()
            myFlying = new Flying(stage);
            stage.addChild(myFlying);
            myFlying.x = stage.stageWidth / 8;
            myFlying.y = stage.stageHeight / 2;
            for (var i:int = 0; i < numClouds; i++)
                stage.addChildAt(new Cloud(stage), stage.getChildIndex(myFlying));
            addEventListener(Event.ENTER_FRAME, loop, false, 0, true);
        private function loop(e:Event) : void
            if (Math.floor(Math.random() * 90) == 5)
                var healthy:Carrot = new Carrot(stage, myFlying);
                var healthy:Broccoli = new Broccoli(stage, myFlying);
                healthy.addEventListener(Event.REMOVED_FROM_STAGE, removeHealthy, false, 0, true);
                healthyList.push(healthy);
                stage.addChild(healthy);
                var junk:Hotdog = new Hotdog(stage, myFlying);
                junk.addEventListener(Event.REMOVED_FROM_STAGE, removeJunk, false, 0, true);
                junkList.push(junk);
                stage.addChild(junk);
        private function removeHealthy(e:Event)
            healthyList.splice(healthyList.indexOf(e.currentTarget), 1);
        private function removeJunk(e:Event)
            junkList.splice(junkList.indexOf(e.currentTarget), 1);
All help and advice very much appreciated.
Thank you!

Answer 1

It's good that you don't expect me to do the work for you - saves me from letting you know that.  Doing the work is how you learn.  I am also not here to teach you, and it looks like you might need to get some basics under your belt before you can pursue something like what you are doing now.
As I already said, the Math.random() method will be one of the key techniques you will need to use for anything you want to have happen randomly.
Usually it comes in handy with randomly choosing an array's index, where the array stores the different items you want to randomly choose.  In your case, the array could store the names of the different functions you could call for each food item you want to add. Or you could have the classes of the objects in the array and randomly choose which one to load in...
   var foodClasses:Array = new Array("Carrots", "Broccoli", "Hotdog", etc...);
this approach requires knowing how to dynamically create a new class instance using only a String value.... for example:
    var ClassRef:Class = Class(getDefinitionByName("className"));
    var classInstance:* = new ClassRef();
    addChild(classInstance);
In that bit of code, the className would be whatever class name you randomly pulled from the array of the class names...
I didn't say it isn't effective, though it can easily fail being effective as well when your file starts getting bogged down with everything else that is going on.  I said it isn't efficient.  It is constantly fliipping a 120-sided coin, as fast as the file's frame rate to see if it comes up 50 or not.  You could use a setTimeout function or a Timer and get much more efficent performance instead... only processing the code when the time passes. 
If you cannot understand how that one line of code works, you are probably in over your head and you need to back up to more basic learning before you can tackle something like what you seem to want to create here.