Countdown help 1

[mamai]

Hi all,

I'm making my first short 3d FPS shooter game where my character must escape a building that is filling with toxic gas. Sounds great ay?! Anyway, i need to find a way to make a health bar or perhaps a countdown that starts at 100% and gradually declines to 0% over the span of 5 minutes.

Ideally i'd like to make an actual "bar" that shows this in graphical form, but for the life of me have no idea how to do it in Director.

Any help would be great! sample scripts welcome

Thanks in advance

Ron