A problem with static variables

Hello

I get this error 1120: Access of undefined property OtherClass.

Ths is the code:

public class SomeClass extends MovieClip
{
        function SomeClass():void
        {
             
        }
 public function SomeFunction():void
{
     var i:int = OtherClass.myVar;
     trace(i);
}
}

public class OtherClass
{
      public static var myVar:int = 2;
      public function OtherClass():void
      {
      }
}

what am i doing wrong?