Bukkit

Ok, I have gave all my players the permission node rankup.rankup, that is the permission to allow them to do /rankup. However, it still won't let me user it, the message "You are not allowed to rankup" comes up. I am sure this is an error as I have added this permission to every group. Also, when I check the console, it comes up with no error messages at all, meaning that this isn't a coding error or config error. How do I allow my players to do /rankup? Here is my permissions file http://pastebin.com/Xk5UjxhC My rankup config is here: http://pastebin.com/RyK8GeTH