CfgScript Synchronize Statements

class MyObject
{
  int _counter = 0;
  MyObject()
  {
  }
  MyObject operator++()
  {
    synchronize(this)
    {
      ++_counter;
      //out.println("c: " + _counter);
      return this;
    }
    return this;
  }
}
/**
  note: you can also derive directly from acdk.lang.Thread
  but using acdk.cfgscript.core.ScriptThread (which is implemented
  in CfgScript) has the advantage, that in case the thread throws
  an exception, you will receive an Script Backtrace
*/
class MyThread
extends acdk.cfgscript.core.ScriptThread
{
  int _loops;
  String _name;
  MyObject _counter;
  MyThread(String name, int loops, MyObject cnt)
  {
    _name = name;
    _loops = loops;
    _counter = cnt;
  }
  void run()
  {
    out.println("loops: " + _loops);
    for (int i = 0; i < _loops; ++i)
    {
      //Thread.sleep(25);
      //out.println(_name + ": " + i);
      ++_counter;
    }
  }
}
MyObject counter = new MyObject();
int count1 = 1200;
int count2 = 1250;
MyThread thr1 = new MyThread("1", count1, counter);
MyThread thr2 = new MyThread("2", count2, counter);

thr1.start();
thr2.start();

thr1.join();
thr2.join();

out.println("Synchronized counter is: " + counter._counter);
if (counter._counter == (count1 + count2))
  out.println("TEST OK");
else
  out.println("TEST FAILED");