private String loadKeyOfAction(String value) {
		if (actionMap == null) {
			actionMap = new HashMap<String, String>();
			actionMap.put(propertiesLoader.loadProperty(Action.ADVANCE.getKey()), Action.ADVANCE.getKey());
			actionMap.put(propertiesLoader.loadProperty(Action.LEFT.getKey()), Action.LEFT.getKey());
			actionMap.put(propertiesLoader.loadProperty(Action.RIGHT.getKey()), Action.RIGHT.getKey());
		}
		return actionMap.get(value);
	}