public OnVehicleSpawn(vehicleid)
{
    new str[128];
    if(vehicleid < 10)
    {
    	format(str,sizeof(str),"U-00%d-C",vehicleid);
    }
    else if(vehicleid < 100)
    {
        format(str,sizeof(str),"U-0%d-C",vehicleid);
    }
    else
    {
        format(str,sizeof(str),"U-%d-C",vehicleid);
    }
    SetVehicleNumberPlate(vehicleid, str);
    return 1;
}