messageClient(%client, '', $Cash::CurrencyName);
But change $Cash::CurrencyName and all instances of it to something else specific to your add-on.
Ok so just replace the $Cash::CurrencyName to for instance $Loto::Winning Number but what is String 17 and 3 and all the other stuff, can you break it up like this:
RTB_registerPref("Currency Name","Cash","$Cash::CurrencyName","string 16","Cashmod",$Cash::CurrencyName,0,0);
Currency Name is the options name
Cash is something
$Cash::CurrencyName is the Global Variable
String is something
Cashmod is something
$Cash::Currency Name,0,0 is (Please explain what each number is too)