Class with function parameter problem

[MrPain]

So it could be problem with implementation or with my logic in general. Code is pretty short and it can not compile. "Operation" takes one function as 3 parameter and return whatever that function does with first 2 parameters.
Thanks in advance.

template<class T, class F>
class Object {
public:	
	T Add(T a, T b) { return a + b;	}
	T Sub(T a, T b) { return a - b; }
	T Operation(T a, T b, F f) {
		return f(a, b);
	}
};

int main() {
	Object<int, int> o; //I know that my first 2 parameters are integers and that function Add will return int
	cout << o.Operation(3, 5, o.Add);


	return 0;
}

[JLBorges]

Pointer to member function: http://www.informit.com/guides/content.aspx?g=cplusplus&seqNum=142

#include <iostream>
#include <string>

class Object {

    public:

        template < typename T > T Add(T a, T b) const { return a + b; } // make this a static member?

        template < typename T > T Sub(T a, T b) const { return a - b; } // make this a static member?

        template < typename T, typename PTR_MEMBER_FN >
        T Operation( T a, T b, PTR_MEMBER_FN ptr_member_fn ) { 

            return (this->*ptr_member_fn)(a, b);
        }
};

int main() {

    Object o;

	std::cout << o.Operation( 3, 5, &Object::Add<int> ) << '\n' ;

	std::cout << o.Operation( 3.2, 5.4, &Object::Add<double> ) << '\n' ;

    using namespace std::literals ;
	std::cout << o.Operation( "Hello "s, "World"s, &Object::Add<std::string> ) << '\n' ;
}

http://coliru.stacked-crooked.com/a/182087d3c18e300c