Dynamic Text Problem

Hey everyone, I am designing a simple flight game where you try to go as far as you can with a limited amount of “thrust”. I have come across a problem though, which I thought was simple.

What I tried to do is use the background images x value as the distance travelled and send that to a dynamic text field… but it didn’t show anything when I tested it.

Here is the code I used:

_root.game.tSigntext.text = _root.game.bg._x;

Assuming that the locations of the objects are correct, am I missing something?