Isometric z-order problem

I try to create isometric tower defense game, but I have z-order problem.

I want to make like this

I find some good .capx or example, but all download link error (dropbox 404)

any ideas or sample .capx?

thanks

Are you using Rex z-sorter plugin? It makes it so much easier

http://c2rexplugins.weebly.com/rex_zsorter.html

Anonnymitet thanks for your reply, I will try it