If your question bears any relevance to this thread, then the snippet I gave you checks if your nick begins with a ! in the nicklist (meaning you're a channel admin) and if it DOES start with a !, then it will notice the nickname.
If it does NOT start with a ! (i.e. you are de-admin'd) then the snippet will not activate.
There is no prefix such as 'on !*:event:' for this type of status because there are so many of these statuses that are made up every month, and then lost again in the dawns of time. @ and + are on ALL IRC networks. % is supported in some aspects, because it's become very popular. Things such as !, * or ~ are unsupported bar methods such as that which is shown above. They really are unnecessary stuff put in IRCds, and purely 'vanity' features with little real practical use.