 			return jsReady;
 		}
 		/**
-         * When the VPAID AdVideoStart event is received, it triggers this function
+         * When the VPAID AdImpression event is received, it triggers this function
          * to start the interval timer which does viewability checks every 200ms (POLL_INTERVAL)
          */
         public function startImpressionTimer(): void {

					_intervalTimer.removeEventListener(TimerEvent.TIMER, onIntervalCheck);
					_intervalTimer = null;
					break;
				case VPAIDEvent.AdVideoStart:
					videoStarted = true;
					if ( jsReady ) {
						startImpressionTimer();
					}


	        private var _isPaused: Boolean = false;
		/**
		 * True if VPAID AdImpression event has been received
		 */
		private var adStarted:Boolean;
		/**
		 * True if JS is ready, and beacons are loaded if needed.
		 */
