arrays - Objects stuck at top of stage and won't fall down -

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i using math.random randomly drop objects top of stage. had working 1 object. wanted increase number 6 objects, added following code: "stuck" , 6 objects @ top of stage. doing wrong here? appreciate help. 

            private function bombinit(): void {                 roachbombarray = new array();          (var i:uint =0; < numbombs; i++) {                 roachbomb= new roachbomb();                     roachbomb.x = math.random() * stage.stagewidth;                     roachbomb.vy = math.random() * 2 -1;                     roachbomb.y = -10;                     addchild(roachbomb);                     roachbombarray.push(roachbomb);          }                      addeventlistener(event.enter_frame, onentry);                 }                  private function onentry(event:event):void {                     (var i:uint = 0; i< numbombs; i++) {                  var roachbomb = roachbombarray[i];                  vy += ay;                 roachbombarray[i] += vy;                   if (roachbombarray[i] > 620) {                 removechild(roachbombarray[i]);                 removeeventlistener(event.enter_frame, onentry);

you're removing enterframe listener when first bomb goes off bottom, @ point you're no longer listening enter_frame events , updating of bombs.

you don't want remove listener until you're done animating bombs.

update: how expect things look, incorperating ethan's observation ought use local roachbomb declare...

public class bombdropper extends sprite {      private static const gravity:int = 1; // set gravity want in pixels/frame^2     private static const bottom_of_screen:int = 620;     private var numbombs:int = 6;     private var roachbombarray:array;      // ... constructor , other class stuff here      private function bombinit(): void     {         roachbombarray = new array();          (var i:int =0; < numbombs; ++i)         {             var roachbomb:roachbomb = new roachbomb();             roachbomb.x = math.random() * stage.stagewidth;             roachbomb.vy = math.random() * 2 -1;             roachbomb.y = -10;             this.addchild(roachbomb);             roachbombarray.push(roachbomb);         }          this.addeventlistener(event.enter_frame, onentry);     }      private function onentry(event:event):void     {         each ( var roachbomb:roachbomb in roachbombarray)         {             roachbomb.vy += gravity;             roachbomb.y += vy;              if (roachbomb.y > bottom_of_screen)             {                 this.removechild(roachbomb);                 roachbombarray.splice(roachbombarray.indexof(roachbomb),1);                 if (roachbombarray.length == 0)                 {                     this.removeeventlistener(event.enter_frame, onentry);                 }             }         }     } }

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