static void onGlobalChanged(const std::string& name, void*)
{
  // This Callback is removed in replay mode. As
  // well, the /set and /reset commands are blocked.

  std::string value = BZDB.get(name);
  void *bufStart = getDirectMessageBuffer();
  void *buf = nboPackUShort(bufStart, 1);
  buf = nboPackUByte(buf, name.length());
  buf = nboPackString(buf, name.c_str(), name.length());
  buf = nboPackUByte(buf, value.length());
  buf = nboPackString(buf, value.c_str(), value.length());
  broadcastMessage(MsgSetVar, (char*)buf - (char*)bufStart, bufStart);
}