Object scope question

1

Hello. I haven’t asked for help in a long time so I’ll get to the point.

I have:

MyPlayer = function()
{
   this.n = 0;
};

_global.player1 = new MyPlayer();

in layer 1 of my movie.

later, in clip1 of layer 2 i have

onClipEvent(load)
{
    _global.player1.n = 300;
    trace(_global.player1.n);
}

onClipEvent(enterframe)
{
    _global.player1.n += 3;
    trace(_global.player1.n);
}

I am coding in flash mx, and when I run the movie it traces

300
303
3
3
3
3

I read the Variable scope tutorials and I understand most of it, but I dont know why _global.player1.n doesn’t increase by 3 like I want it to?

thanks!