I'm not certain about freeshards. When you get the context menu from mounts etc. on your freeshard, what happens? On OSI, all that is happening is that we are opening your beetle pack. So if you want to bypass that code and hardcode your beetle packid, then that would work. Sorry, but we don't officially support freeshards, but we have made it work on some (RunUO).
Edit:
If you can tell me what your Context menu for your beetle says i.e. what line number "open beetle pack" appears I can tell you how to modify this script for your particular freeshard.