Hello hayssam1,

I can think of two different approaches to this.

The first is to set the max number of simultaneous images tracked to a value greater than 1 in the Vuforia configuration. Now you'll be able to track multiple images and you can write code to display a different model if a combination of images are detected.

The second is you could create additional image targets that are two of the other image targets combined and thus a different detection would happen if they were seen together.

Let me know if you have further questions.

Thanks,

-Vuforia Support

i wrote this code and i got nothing 

if (mTrackableBehaviour.TrackableName == "t" && mTrackableBehaviour.TrackableName == "apple")

            {

                GameObject.Find("congCube").SetActive(true);

            }

i added this code

on private void OnTrackingFound()

please tell me where can i write this code

In the code you have there, you are checking if the same trackable is both "t" and "apple."  What you'll need in order to get this functioning is to have code in a more central place keep track of which trackables are found and then augment the 3D object when the correct combination is found.

A short example would be:

if (mTrackableBehaviour.TrackableName == "t")
{
    // set flag on external object
}
else if (mTrackableBehaviour.TrackableName == "apple")
{
    // set separate flag on external object
}

Then have your other object check when both of these flags are set and augment the correct 3D object.

Thanks,

-Vuforia Support

thanks...I'll try the below suggestion. :)

How would a script look for the 2 images to = 1 3d object?