Hi, I’m Knight.zhou and I write LookbackonBlog (who Yangbo is) to help people make the flex programmer from newbie to successful expert (the reader’s problem or goal). I started LookbackonBlog in 2009 to help other people deal with the flex problem.sometimes interact with php,java,.net,c,c++ even more. Prior to raising my code level, I spent over 4 years as a flexer, corporate trainer and workshop leader (www.godpaper.com,www.icid-link.com,www.lookbackon.com). To contact me, please email smarkit(at)msn(dot)com.