Passing variables between classes in Actionscript 3 - actionscript-3

Question

I'm not terribly good at this modern object coding lark and think I may have misunderstood how this is meant to to work:
This is test.as in my Flash Builder 4.7 project called test
package
{
import flash.display.Sprite;
public class test extends Sprite
{
public var myVar:int = 10;
public function test() {
var myTestsub:testsub = new testsub;
}
}
}
And this is my testsub.as file:
package
{
public class testsub
{
public function testsub()
{
trace(myVar);
}
}
}
Flash Builder tells me that in testsub.as "Possible access of undefined variable myVar" and will not compile.
From my limited, and probably incorrect, understanding, making myVar public in test.as should allow testsub.as to use it. Can anyone explain where I am going wrong? Thank you in advance.

Answer 1

you need to wirte your var like this:
public class the_var
{
public function the_var
{
public static var my_var:number = 10;
}
}
and call your var in other classes like this:
public class the_test
{
public function the_test
{
trace(the_var.my_var);
}
}

Answer 2

There are no connections between the classes. They need a link, similar to this solution:
public class test extends Sprite
{
public var myVar:int = 10;
public function test() {
var myTestsub:testsub = new testsub(this);
}
}
public class testsub
{
public function testsub(otherClass:test)
{
trace(otherClass.myVar);
}
}
In test when creating the testsub-class we pass a long a referende to the instance of test. That makes it possible to access public functions & variables on that instance from the other class. (Observer that you need to add test-class as an import inside testsub in order to compile code.