[Molecula]

Я юзаю такой:

package{
	
	import flash.events.Event;
	
	public class CustomEvent extends Event{
		
		public static const ON_ROTARE:String = "onRotare";
		public static const ON_COVER:String = "onCover";
               public var params:Object;
		
		public function CustomEvent($type:String, $params:Object, $bubbles:Boolean = false, $cancelable:Boolean = false ){
			super( $type, $bubbles, $cancelable );
                       this.params = $params;
		}
		public override function clone():Event{
                       return new CustomEvent( type, this.params, bubbles, cancelable );
                }
        
               public override function toString():String{
                      return formatToString( "CustomEvent", "params", "type", "bubbles", "cancelable" );
               }
}
}

Параметры могу передать:

this.dispatchEvent(new CustomEvent(CustomEvent.ON_UNBLOCK, {value:'next'}));