Target Image field

Hello,

I just have a quick question.

After applying the script 'SimpleCloudRecoEventHandler' I don't have the input field for my reference image.

This is my script :

using UnityEngine;

using Vuforia;

public class SimpleCloudRecoEventHandler : MonoBehaviour {     private CloudRecoBehaviour mCloudRecoBehaviour;     private bool mIsScanning = false;     private string mTargetMetadata = "";     public ImageTargetBehaviour ImageTargetTemplate;

    // Register cloud reco callbacks     void Awake()     {         mCloudRecoBehaviour = GetComponent<CloudRecoBehaviour>();         mCloudRecoBehaviour.RegisterOnInitializedEventHandler(OnInitialized);         mCloudRecoBehaviour.RegisterOnInitErrorEventHandler(OnInitError);         mCloudRecoBehaviour.RegisterOnUpdateErrorEventHandler(OnUpdateError);         mCloudRecoBehaviour.RegisterOnStateChangedEventHandler(OnStateChanged);         mCloudRecoBehaviour.RegisterOnNewSearchResultEventHandler(OnNewSearchResult);     }     //Unregister cloud reco callbacks when the handler is destroyed     void OnDestroy()     {         mCloudRecoBehaviour.UnregisterOnInitializedEventHandler(OnInitialized);         mCloudRecoBehaviour.UnregisterOnInitErrorEventHandler(OnInitError);         mCloudRecoBehaviour.UnregisterOnUpdateErrorEventHandler(OnUpdateError);         mCloudRecoBehaviour.UnregisterOnStateChangedEventHandler(OnStateChanged);         mCloudRecoBehaviour.UnregisterOnNewSearchResultEventHandler(OnNewSearchResult);     }     public void OnInitialized(TargetFinder targetFinder)     {         Debug.Log("Cloud Reco initialized");     }     public void OnInitError(TargetFinder.InitState initError)     {         Debug.Log("Cloud Reco init error " + initError.ToString());     }     public void OnUpdateError(TargetFinder.UpdateState updateError)     {         Debug.Log("Cloud Reco update error " + updateError.ToString());     }     public void OnStateChanged(bool scanning)     {         mIsScanning = scanning;         if (scanning)         {             // clear all known trackables             var tracker = TrackerManager.Instance.GetTracker<ObjectTracker>();             tracker.GetTargetFinder<ImageTargetFinder>().ClearTrackables(false);         }     }     // Here we handle a cloud target recognition event     public void OnNewSearchResult(TargetFinder.TargetSearchResult targetSearchResult)     {         TargetFinder.CloudRecoSearchResult cloudRecoSearchResult =             (TargetFinder.CloudRecoSearchResult)targetSearchResult;         // do something with the target metadata         mTargetMetadata = cloudRecoSearchResult.MetaData;         // stop the target finder (i.e. stop scanning the cloud)         mCloudRecoBehaviour.CloudRecoEnabled = false;         // Build augmentation based on target         if (ImageTargetTemplate)         {             // enable the new result with the same ImageTargetBehaviour:             ObjectTracker tracker = TrackerManager.Instance.GetTracker<ObjectTracker>();             tracker.GetTargetFinder<ImageTargetFinder>().EnableTracking(targetSearchResult, ImageTargetTemplate.gameObject);         }     }

    void OnGUI()     {         // Display current 'scanning' status         GUI.Box(new Rect(100, 100, 200, 50), mIsScanning ? "Scanning" : "Not scanning");         // Display metadata of latest detected cloud-target         GUI.Box(new Rect(100, 200, 200, 50), "Metadata: " + mTargetMetadata);         // If not scanning, show button         // so that user can restart cloud scanning         if (!mIsScanning)         {             if (GUI.Button(new Rect(100, 300, 200, 50), "Restart Scanning"))             {                 // Restart TargetFinder                 mCloudRecoBehaviour.CloudRecoEnabled = true;             }         }     } }

I have this error  Assets\Editor\SimpleCloudRecoEventHandler.cs(53,35): error CS0246: The type or namespace name 'TargetFinder' could not be found (are you missing a using directive or an assembly reference?)

Can anyone tell me why?

Thanks