Dynamic naming textField and refering it

Hi guys, this thing is bugging me a lot and i know I am doing something wrong but cant figure what!

I am generation a textField by

_root.createTextField(“some”+randomNumber,1);

Now I want to assign some text to the textField, how do I refer to it???

I tried using a variable first like
var myText=“some”+randomNumber;
_root.createTextField(myText,1);

myText.text=“something”;

it doesnt work it gives me an error

Any advice