Found the problem. ... in my Delegate I forgot toaddResponder to the
AsyncToken.Before:public function getUsers():void{ var call:AsyncToken;
call = service.getUsers(); Alert.show("Get users was called");
}After:public function getUsers():void{ var call:AsyncToken; call =
service.getUsers(); call.addResponder(this.responder); Alert.show("Get
users was called"); }