GameObject Parent & Child Visibility

Hello Crew, I have a camera moving around a landscape and when it passes an invisible plane Trigger it activates a Game Object I assign in Inspector that Game Object (which has a lot of different things in it : Text, planes with Textures and models etc) I uncheck in the inspector to make it not active My script (.js) below is triggering all the correct messages in Console but not toggling the Game Object (& children's) visibility

 #pragma strict
 
 var myVisible : GameObject;
 var isTextureVisible : boolean = false;
 var theCollision;
   
 function OnTriggerEnter (other : Collider) {
 
   Debug.Log("collision");    
     
     if (myVisible.activeSelf==false) {
       Debug.Log("true");
     myVisible.SetActive(true); 
     }
     else if (myVisible.activeSelf==true) {
       Debug.Log("false");
     myVisible.SetActive(false);
         }
 }
     
     

Thanks All ~be