For that many targets, I recommend that you use our VWS API. Here are samples in Java that show how to upload and manage your targets - VWS Sample Code

Also see: https://developer.vuforia.com/resources/dev-guide/managing-targets-cloud-database-using-developer-api

Where are you stuck?

ok im sorry i didnt mention im using Unity for this .... well i got the one target working fine but i really don tknow where to go from here 

see the instructions in this thread - https://developer.vuforia.com/forum/unity-3-extension-technical-discussion/please-explain-step-step-how-use-vuforia-cloud

I read that post but question.. Do i need to write that , cause i dont see any of this code on the CloudRecoEventHandler sorry for the hassle but im a bit confused

You'll need to replace the CloudRecoEventHandler script with this version - which is copied from that thread. Add this script to the CloudRecognition prefab instance and drag your ImageTarget instance onto the Image Target Template field. Be sure that the Image Target Behaviour type is defined as Cloud Reco. It may be easier to start with a fresh project, rather than use the sample.

using System;
using UnityEngine;
 
/// <summary>
/// This MonoBehaviour implements the Cloud Reco Event handling for this sample.
/// It registers itself at the CloudRecoBehaviour and is notified of new search results.
/// </summary>
public class SimpleCloudRecoEventHandler : MonoBehaviour, ICloudRecoEventHandler
{
    #region PRIVATE_MEMBER_VARIABLES
 
    // CloudRecoBehaviour reference to avoid lookups
    private CloudRecoBehaviour mCloudRecoBehaviour;
    // ImageTracker reference to avoid lookups
    private ImageTracker mImageTracker;
 
    #endregion // PRIVATE_MEMBER_VARIABLES
 
 
 
    #region EXPOSED_PUBLIC_VARIABLES
 
    /// <summary>
    /// can be set in the Unity inspector to reference a ImageTargetBehaviour that is used for augmentations of new cloud reco results.
    /// </summary>
    public ImageTargetBehaviour ImageTargetTemplate;
 
    #endregion
 
 
 
    #region ICloudRecoEventHandler_IMPLEMENTATION
 
    /// <summary>
    /// called when TargetFinder has been initialized successfully
    /// </summary>
    public void OnInitialized()
    {
        // get a reference to the Image Tracker, remember it
        mImageTracker = (ImageTracker)TrackerManager.Instance.GetTracker(Tracker.Type.IMAGE_TRACKER);
    }
 
    /// <summary>
    /// initialization errors
    /// </summary>
    public void OnInitError(TargetFinder.InitState initError)
    {
    }
 
    /// <summary>
    ///  update errors
    /// </summary>
    public void OnUpdateError(TargetFinder.UpdateState updateError)
    {
    }
 
    /// <summary>
    /// updates to the scanning state
    /// </summary>
    public void OnStateChanged(bool scanning)
    {
    }
 
    /// <summary>
    /// Handles new search results
    /// </summary>
    /// <param name="targetSearchResult"></param>
    public void OnNewSearchResult(TargetFinder.TargetSearchResult targetSearchResult)
    {
        // duplicate the referenced image target
        GameObject newImageTarget = Instantiate(ImageTargetTemplate.gameObject) as GameObject;
 
        // enable the new result with the same ImageTargetBehaviour:
        ImageTargetBehaviour imageTargetBehaviour = mImageTracker.TargetFinder.EnableTracking(targetSearchResult, newImageTarget);
 
        if (imageTargetBehaviour != null)
        {
            // stop the target finder
            mCloudRecoBehaviour.CloudRecoEnabled = false;
        }
    }
 
    #endregion // ICloudRecoEventHandler_IMPLEMENTATION
 
 
 
    #region UNTIY_MONOBEHAVIOUR_METHODS
 
    /// <summary>
    /// register for events at the CloudRecoBehaviour
    /// </summary>
    void Start()
    {
        // register this event handler at the cloud reco behaviour
        CloudRecoBehaviour cloudRecoBehaviour = GetComponent<CloudRecoBehaviour>();
        if (cloudRecoBehaviour)
        {
            cloudRecoBehaviour.RegisterEventHandler(this);
        }
 
        // remember cloudRecoBehaviour for later
        mCloudRecoBehaviour = cloudRecoBehaviour;
    }
 
    #endregion // UNTIY_MONOBEHAVIOUR_METHODS
 
}

Hi : 

Ok I did copy the hole script but still dont knwo how this works? how am i suppose to know which image is which and parent its object to it? 

thank you

Hi, i tried with youre script but it doens´t work, i have the same problem.

only work 1 and i need almost 50.

Can you help me?