String question...

[Fhqwhgads]

ok im trying to make a sign that displays the server string, like says the score in the event.. and i can't figure out what im doing wrong.. heres the script:

NPC Code:

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message #s(server.ppb);

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i mean it does show it.. but when i change the server.ppb, it doesnt update itself... like i made the script where you go /setscore # , and that works.. it changes the string in the server flag, but when you do that the

NPC Code:

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message #s(server.ppb);

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doesnt update itself.. it stays what the old one was, and you have to update the level.. i know a script where u have to do if playerchats blah blah blah and then message #s(server.ppb);, but i dont want people to have to say that, i just want them to be able to see it.. kind of like the score on UN's CTF