ActionScript 3.0 :: Dynamically Update The Text?

I have an FLA file with a dynamic text symbol on it.Its a 3 frame movie, 1st frame is the menu, 2nd the game, 3rd the game over screen.

Frame 2 is where I'm trying to dynamically update the text. I have:

scoreDisplay.text = gameScore.toString();

When I do a trace( scoreDisplay.text ), I do see it changing, however on movie, it doesn't change. I don't get any errors, and the game plays fine. I have a class setup. I have the constructor, a function to handle clicking on the cards, and a function to handle updating the dynamic text:

Code:
public function showGameScore()
{
scoreDisplay.text = gameScore.toString();

[code]....