Menu class help!

[teofilo]

I built this class for simple text based menu, for using with other classes.

#ifndef MENU_H
#define MENU_H

#include <string>
using std::string;

#include <vector>
using std::vector;

#include "misc.h"

template <class MyClass>
struct Option
{
string labbel;
void (MyClass::*function)(void);
};


template <class MyClass>
class Menu
{
private:
string title;
string exit_labbel;
vector< Option<MyClass> > options;

public:
// Constructor
Menu(const string& title, const string& exit_labbel);

// Destructor
~Menu(void){};

// Adicionar Opcao
void AddOption(const string& labbel, void (MyClass::*funcao)(void));

// Ligar o menu
void Start() const;

};


template <class MyClass>
Menu<MyClass>::Menu(const std::string &title, const std::string &exit_labbel):
title(title),
exit_labbel(exit_labbel)
{
}


template <class MyClass>
void
Menu<MyClass>::AddOption(const std::string &labbel, void (MyClass::*function)(void))
{
Option<MyClass> option;
option.labbel = labbel;
option.function = function;
options.push_back(option);
}


template <class MyClass>
void
Menu<MyClass>::Start() const
{
cout << endl << '[' << title << ']' << endl;

unsigned numoption = 1;

for(unsigned i = 0; i != options.size(); ++i)
{
cout << " * " << numopcao << " - " << options[i].labbel << endl;
numoption++;
}

cout << " * 0 - " << exit_labbel << endl;

std::cin >> input;

if( input == 0 )
return;
else
{
options[input - 1].function;
}

Start();
}

#endif

This thing compiles, and functions are working but when I choose some option, it just calls Start again without calling the option I choose.
Can someone help me :P ?

[teofilo]

example of use

class Thing
{
public:

Menu main_menu;

void dosomething(void)
{
std::cout << "It's working!" << std::endl;
}

Thing(): main_menu("Main Menu","Exit Program")
{
main_menu.AddOption("Do Something",&dosomething);
}

void SeeMenu(void)
{
main_menu.Start();
}

};

Thing any;

any.SeeMenu();