1 to index called by for loop?

programming flash
1

I am updating the position of movieClips stored in an array with an enter frame event loop.

function onEnterFrame(e:Event){         
   areaArray[1].x = areaArray[0].x + areaArray[0].spacing.width;
  areaArray[2].x = areaArray[1].x + areaArray[1].spacing.width;
  areaArray[3].x = areaArray[2].x + areaArray[2].spacing.width;
  areaArray[4].x = areaArray[3].x + areaArray[3].spacing.width;
  areaArray[5].x = areaArray[4].x + areaArray[4].spacing.width;
}

I would like to do the same thing with a for loop but cant figure it out. My below example doesn’t work. But in essences this is what i would like to do adding 1 to the index called by the for loop

function onEnterFrame(e:Event){  
   for (var j:int = 0; j < areaArray.length; j++) {
                areaArray[**[COLOR=#ff0000](j+1)[/COLOR]**].x = areaArray[j].x + areaArray[j].spacing.width;
 
            }
}

can someone steer me in the right direction

Thanks!