Accessing externally defined variables - Simples? (i hope)

Here is the problem:
I have 2 external as3 files in a “com” folder next to the FLA within which i am working. The first of these ( “”) is the document class. The second (“”) contains variable definition “myVar:Number = 0” which i want to be able to access and change inside I am sure that this is possible, but i can’t get it working (flash very helpfully keeps pointing out that I have made an error. Specifically that old classic: “1046: Type was not found or was not a compile-time constant: myVar.” which has puzzled me since the dawn of time… or at least the dawn of actionscript 3…)

Anyway, if anyone could help i would be very thankful…