Dynamic Text Fields & Animation - Won't Work?

Hey there,
I got a quick question…

I have a Dynamic Text field inside a MovieClip and I’m trying to make it “Fade” (Go to Alpha 0%) with a Motion Tween over time.

I’ve noticed everythin within the MovieClip BUT the Dyanmic Text field fades…

Am I not able to animate Dynamic Text fields? Is there a fix :D?

Cheers!