Hi, I've got an application on iPad, where I change the render of a building (transparent/opaque) when touching this building My script here works well to switch from initial Opaque to Transparent for the 3 buildings tagged (casault, education and felix) but then, once a building is transparent, if I touch this building again, he doesn't go back to Opaque . Any ideas why ???

var _casault : GameObject;
var _education : GameObject;
var _felix : GameObject;
var material_transparent: Material;
var material_opaque: Material;
var hit: RaycastHit;

var casault_visible: boolean=true;
var education_visible: boolean=true;
var felix_visible: boolean=true;

function Update(){

for(var touch: Touch in Input.touches)
{
    if(touch.phase==TouchPhase.Began)
    {
       var ray= Camera.main.ScreenPointToRay(touch.position);
       if(Physics.Raycast(ray,hit))
       {
         if(hit.collider.tag=="Casault"&&casault_visible=true)
         {
         _casault.renderer.material=material_transparent;
         casault_visible=false;
         }

         if(hit.collider.tag=="Education"&&education_visible=true)
         {
         _education.renderer.material=material_transparent;
         education_visible=false;
         }

         if(hit.collider.tag=="Felix"&&felix_visible=true)
         {
         _felix.renderer.material=material_transparent;
         felix_visible=false;
         }

         if(hit.collider.tag=="Casault"&&casault_visible=false)
         {
         _casault.renderer.material=material_opaque;
         casault_visible=true;
         }

         if(hit.collider.tag=="Education"&&education_visible=false)
         {
         _education.renderer.material=material_opaque;
         education_visible=true;
         }

         if(hit.collider.tag=="Felix"&&felix_visible=false)
         {
         _felix.renderer.material=material_opaque;
         felix_visible=true;
         }
       }
    }



}
}