LNK 2028 Unresolved token with LogitechSDK

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VisualC++

Hi everyone!!!
Lets see, i'm not a programmer but i'd been trying to built a program to use some leds from a HOTAS (fligh sim hardware), right now i'm trying to get the handler to this device.
The problem is that i dont understand what VC try to tell me with this error:

error LNK2028: unresolved token (0A000344) "public: void __thiscall LogitechControllerInput::ControllerInput::Update(void)" (?Update@ControllerInput@LogitechControllerInput@@$$FQAEXXZ) referenced in function "int __cdecl main(void)" (?main@@$$HYAHXZ)

And of course this is the program that suppose to get the device handler:

// Test Led.cpp : main project file.

#include "stdafx.h"
#include <LogiJoystick.h>
#include <LogiControllerInput.h>

using namespace System;
using namespace LogitechControllerInput;

LogitechControllerInput::ControllerInput;
LPDIRECTINPUTDEVICE8 device_;
ControllerInput* g_controller;
;
int main()
{

        g_controller->Update();
        for (INT ii = 0; ii < LG_MAX_CONTROLLERS; ii++)
        {
                if (g_controller->IsConnected(ii))
                {
                        int u=0;
                }
                if (g_controller->IsConnected(ii,LG_MODEL_G940_THROTTLE))
                {
                        device_ = g_controller->GetDeviceHandle(ii);
                }
        
        }
        
}

So please Obi One you are my last hope.