Anyway thank you for the answer. I know whats the problem. This is an example of "cargo cult programming" This is where I read the solutions.
https://gist.github.com/zyxar/2317744 -- You received this message because you are subscribed to the Google Groups "golang-nuts" group. To unsubscribe from this group and stop receiving emails from it, send an email to golang-nuts+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.