How to make a 9 slice scaling Sprite?

I need to make a 9 slice scaling Sprite, I can make it with Flash and, export the swf, then import it in Openfl, works in the Flash target but in the html5 target is not implemented. Any plans to implement this? or there is something already made out there?

Hi, you can use bitmap. Here is example for haxeflixel framework.
You can easy modify it for pure openfl =)