if(strcmp(cmd, "/iamtaxi", true) == 0) {
   new pname[256];
   GetPlayerName(playerid, pname, 256);
   format(string, sizeof(string), " %s Is now a taxidriver.If you need a taxi type /needtaxi [location] ", pname);
   SendClientMessageToAll(COLOR_YELLOW,string);
   return 1;
}