addEventListener to all in Array as3

okay, i am trying to use arrays to add and remove event listeners to some drag and drop items, and keep getting the Error #1009: Cannot access a property or method of a null object reference.

here’s what i got:

var draggers:Array = [barrelR,cautionR,menatworkR,sawhorseR,slipperyW,hillW];

for (var i:uint = 0; i < draggers.length; i++)
    draggers*.buttonMode = true;
    draggers*.addEventListener(MouseEvent.MOUSE_DOWN, pickUp);
    draggers*.addEventListener(MouseEvent.MOUSE_UP, dropIt);

function pickUp (event:MouseEvent) :void

function dropIt (event:MouseEvent) :void

i feel like a complete moron cause i can’t figure this out. thanks in advance :expressionless: