Score Counting

Hello,
I have reduced the weight of my flash file to under 300KB so this is a very basic version of my game.

My problem is with score counting, i have a score field, a main character and 5 coins.

When the character collides with the coin the following happens:
1. The coin disappears (Supposed to happen)
2. Adds 1 point to the score (doesn't work the way it should)

What happens is (i have set the score field to start at 0 with (_root.score = 0;) this for some reason doesn't have any affect.

Only the first coin to be hit adds (1) to the score, after hitting a second it completely disappears.

I Also have it set so that if the score goes to 5, the door in the top left will open. (NOTE: for some reason this seems to work, if you "collect" all the coins the door will open, but the SCORE field doesn't show the number)

I am using ActionScrip 2.0
and Adobe Flash CS5

NOTE: the fla is a CS5 file, as saving it as a CS4 file was about double the size.

You need to embed numeric values in the textfield. Should work fine after that.