I'm glad, you can edit in the scipts, but why do you have to read the script to get it running?
In the 3.xx you just hit the script and run it, so I think there will be people out there, who will be glad if you fix this little thing, more like it were in the 3.xx

What you have is the function OnEvent_Initialize(MessengerStart) where your script is in. You can add more event functions which will execute on a specific event, like when you send a message or change your status.
For all available events, please read the Events Reference in the Scripting Documentation.