ActionScript 3.0 :: Adding Multiple Instances At Varying But Specific Points On Stage

add multiple instances of an object to the stage at different but not random points.

For example - I have a box that is linked to a class file. In the class file I have an "ADDED_TO_STAGE" event listener. The function that is called places the box at a certain position on the stage say.... x=100, y= 200.

In the document class I create an instance of it like so -

_box:box = new box();
addChild(_box);

Now what I want is to create multiple instances of box on the stage every 5 seconds. But I don't want them all to spawn at (100,200) on the stage. But here's the catch, I don't want them to be random spawns either.

for ex- I want the first instance of box to spawn on (100,200), then 5 seconds later, the second instance to spawn at (200, 800), the third at (100, 500) and so on.

Would it be possible for me to create objects on the stage to serve as reference points for where i want the instances to spawn instead of writing the exact co-ordinates?