 		 * Define your own API and use extCtx.call() to communicate with the native part of the ANE.
 		 */
 		public function isSupported() : Boolean {
-			return extCtx.call( 'isSupported' );
+			return _extCtx.call( 'isSupported' );
 		}
 		
 		/**

		 * Status events allow the native part of the ANE to communicate with the ActionScript part.
		 * We use event.code to represent the type of event, and event.level to carry the data.
		 */
		private function onStatus( event : StatusEvent ) : void
		{
			if (event.code == "LOGGING")
			{
				trace('[AirDeviceId] ' + event.level);
			}
		}
	}

			
			if ( !this._idfa ) {
				
				this._idfa = _extCtx.call( 'getIDFA' ) as String;
				
				if ( this._idfa == '00000000-0000-0000-0000-000000000000' ) {
					this._idfa = null;
