// Use this for initialization
 void Start()
 {
     classe    = scenePrec.GetComponent <ScenePrecedente>();
     variables = GOvariables.GetComponent <ChgmtScn>();
 }
 // Use this for initialization
 void Start()
 {
     classe    = sceneSuiv.GetComponent <SceneSuivante>();
     variables = GOvariables.GetComponent <ChgmtScn>();
 }