Wikitude

Hi I am trying to use camera flash on my AR project. 

i tried using the sample cs that came with the wikitude sample scene however i was not able to access any of my touch or button features with the codes i wrote. I tried separating the code from the sample code but still doesn't work. can anyone help me with this. (beginner programmer) 

using UnityEngine;

using UnityEngine.UI;

using Wikitude;

using System.Collections;

public class CameraSettingsController : SampleController

{

    public WikitudeCamera Camera;

    public GameObject FlashModeLayout;

    public Dropdown FlashModeDropdown;

    public void OnCameraOpened() {

        PositionDropdown.value = (int)Camera.DevicePosition;

        if (Camera.IsFlashModeSupported(CaptureFlashMode.On)) {

            FlashModeLayout.SetActive(true);

            FlashModeDropdown.value = (int)Camera.FlashMode;

        } else {

            FlashModeLayout.SetActive(false);

        }

    }

    public void OnCameraControlsButtonClicked() {

        ControlsLayout.SetActive(!ControlsLayout.activeSelf);

    }

    public void OnPositionChanged(int newPosition) {

        Camera.DevicePosition = (CaptureDevicePosition)newPosition;

    }

    public void OnFlashModeChanged(int newFlashMode) {

        Camera.FlashMode = (CaptureFlashMode)newFlashMode;

    }

}