display custom tile for missing tiles in google maps app

I am working with google maps in flash, and i would like to know how to serve up my own image tile for the "we have no imagery at this zoom level..." error.

I dont want to serve up an entire map of images - just for the times when google has no image

• does the tile layer base dispatch an event? (i couldnt find any in the api)
• is there a method that can be overridden by extending the tilelayerbase class

any help开发者_如何学JAVA appreciated

http://gmaps-samples-flash.googlecode.com/svn/trunk/demos/CustomMapRoadTrip/CustomMapRoadTrip.html

I'm pretty sure this does what you need ^ ?

http://code.google.com/apis/maps/documentation/flash/forum.html?place=topic%2Fgoogle-maps-api-for-flash%2Ft7oYId6UeI0%2Fdiscussion