Make an object invisible from 1 camera

I have a scene with differents camera use simultaneously and regarding the same scene.
I would like to make an object invisible only from one camera.
How can I do ?
I tried to attach to my camera this script, but it’s not working :

function Update () {
myObject.renderer.enabled = false;
}

The general solution is to put the object on different layers.

http://docs.unity3d.com/Documentation/Components/Layers.html

Then you can set the culling mask for the camera on each camera to only display the layers that you want.

http://docs.unity3d.com/Documentation/Components/class-Camera.html