I have my code setup so that I have an movieclip in my library a class called "block" being duplicated multiple times and added into an array like this:

function makeblock(e:Event){
newblock=new block;
newblock.x=10;
newblock.y=10;
addChild(newblock);
myarray[counter] = newblock; //adds a newblock object into array
counter += 1;
}

Then I have a loop with a currently primitive way of handling my problem:

    stage.addEventListener(Event.ENTER_FRAME, gameloop);
    function gameloop(evt:Event):void {
        if (moveright==true){
            myarray[0].x += 5;
            myarray[1].x += 5;
            myarray[2].x += 5
              -(and so on)-

My question is how can I change x,y values every frame for new objects duplicated into the array, along with the previous ones that were added. Of course with a more elegant way than writing it out myself... array[0].x += 5, array[1], array[2], array[3] etc.

Ideally I would like this to go up to 500 or more array objects for one array so obviously I don't want to be writing it out individually haha, I also need it to be consistent with performance so using a for loop or something to loop through the whole array and move each x += 5 wouldn't work would it? Anyway, if anyone has any ideas that'd be great!