thank you very much , worked !

You're absolutely right, using the Inspector was bad advice (I guess it doesn't work for components).

If your javascript is attached to another object than you should be able to get it using the GameObject.Find method:

MyJavascript myJS = (MyJavascript) FindObjectOfType(typeof(MyJavascript));

Note this is expensive, so you'll want to do it once when the script starts and cache the result.

- Kim

thanks kim , my scripts are not on the same object , I tried to do it with a public variable and then as you said drag my script on the inspector , but I can't do that , it doesn't allow me to drag the script on the public variable in the inspector . I placed my javascript file in the plugins forlder as you said . and in the editor even the auto complition tool had my javascript file as a variable type. I defined it like : "public mainScript js;" and it appears in the inspector but I can't drag and drop my mainScript.js on it in the inspector ;(

I think it might be easier to call javascript functions from the OnTrackingLost/OnTrackingFound methods. You could use that to set a variable in your javascript class, for instance.

You'll need to get a handle to the javascript object in C#. If the scripts are attached to the same object you can use the GetComponent() method, otherwise you could pass it in via a public member variable (and drag the javascript onto the field in the Inspector view).

The only trick here is to make sure your javascript file compiles first. You can do that by placing it in the Plugins folder, which is in an earlier compilation pass than our C# classes.

- Kim