I've tried and failed to get the iOS version of the Gaming plugin to work. Specifically, showing a designated leaderboard, as specified by its ID. The code Gideros uses to do this was deprecated in iOS 7 according to XCode's handy warning hints. This means, in its current state, it always shows the default leaderboard, as specified by the iTunes control panel, regardless of what ID you send.
Does anyone here on the forum know how to update these things in XCode? The closest I got was showing the awards instead, with a window that refused to close. Gah!