Problem with class inheritance in AS

While developing my game states system I found a problem. I have this parent class:

class GameState { GameState() {} void Init() {Print("Gamestate init");} void Leave() {} void HandleUpdate(StringHash eventType, VariantMap& eventData) {} void HandleKeyDown(StringHash eventType, VariantMap& eventData) {} void HandleKeyUp(StringHash eventType, VariantMap& eventData) {} void HandleControlClicked(StringHash eventType, VariantMap& eventData) {} }

The game states inherit from this class. I tried to avoid having an state manager, but I found that it was difficult to go back to previous states, so I added the manager class:

[code]
#include “Scripts/Engine/GameState.as”

class StateManager
{
StateManager()
{
states.Clear();
}

void SubscribeToEvents()
{
//SubscribeToEvent(scene, “SceneUpdate”, “HandleUpdate”);
SubscribeToEvent(“KeyDown”, “HandleKeyDown”);
SubscribeToEvent(“KeyUp”, “HandleKeyUp”);
SubscribeToEvent(“UIMouseClick”, “HandleControlClicked”);
}

void Push(GameState st)
{
states.Push(st);
states[states.length-1].Init();
}

/**
Removes state on top
*/
void Pop()
{
//exit current state
states[states.length].Leave();
states.Pop();
}

void HandleUpdate(StringHash eventType, VariantMap& eventData)
{
states[states.length-1].HandleUpdate(eventType, eventData);
}

void HandleKeyDown(StringHash eventType, VariantMap& eventData)
{
states[states.length-1].HandleKeyDown(eventType, eventData);
}

void HandleKeyUp(StringHash eventType, VariantMap& eventData)
{
states[states.length-1].HandleKeyDown(eventType, eventData);
}

void HandleControlClicked(StringHash eventType, VariantMap& eventData)
{
states[states.length-1].HandleKeyDown(eventType, eventData);

}

Array<GameState> states;
int current;

}[/code]

But there is aproblem here. The StateManager.Push() function always calls the ancestor class (GameState) method, instead of calling the derived class metheds, even when I declare them override. So, this code:

MainMenuState menu;
menu = MainMenuState()
stManager.Push(menu);

Instead of executing MainMenuState.Init(), executes GameState.Init(). Perhaps I should include all the game states classes in the StateManager script?