Arrays

I am trying to learn flash and was playing with arrays to see how they work.
I understand pretty much but my question is this. If I have a array linked to a
dynamic text box and I give the text box a instance how do I get the or can I
get the text box to move around the stage.
numbers = [1, 2, 3];
trace(numbers);
newnum =(numbers[2]);
trace(newnum);
displayText = “newnum”;
box._x += 5;

this is the code I was trying to use. I also attached the file. Thanks