if(strcmp(cmd, "/engine", true) == 0 || strcmp(cmd, "/engine", true) == 0)
    {
        new vid = GetPlayerVehicleID(playerid);
        GetVehicleParamsEx(vid,engine,lights,alarm,doors,bonnet,boot,objective);
        if(vid != INVALID_VEHICLE_ID)
        if(!IsPlayerInAnyVehicle(playerid)) return SendClientMessage(playerid, COLOR_GRAD2, "You must be in a vehicle before you can do this!");
        if(GetPlayerState(playerid) == PLAYER_STATE_PASSENGER) return SendClientMessage(playerid, COLOR_GRAD2, "Only the driver can do this!");
        if(!PlayerVehicleID1[playerid]  || !PlayerVehicleID2[playerid] || !PlayerVehicleID3[playerid]) return  SendClientMessage(playerid, COLOR_GREY, " You don't have the keys of this vehicle"); // this line added by me
        if(engine == VEHICLE_PARAMS_OFF || engine == VEHICLE_PARAMS_UNSET)
        {
            SendClientMessage(playerid, -1, ""#COL_WHITE"> You have "#COL_GREEN" started"#COL_WHITE" the engine");
            GetPlayerName(playerid, sendername, sizeof(sendername));
            format(string, sizeof(string), "* %s takes out the keys - inserts it into the ignition and twists it.", sendername);
            ProxDetector(30.0, playerid, string, COLOR_PURPLE,COLOR_PURPLE,COLOR_PURPLE,COLOR_PURPLE,COLOR_PURPLE);
            SetVehicleParamsEx(vid,VEHICLE_PARAMS_ON,lights,alarm,doors,bonnet,boot,objective);
        }
        else if(engine == VEHICLE_PARAMS_ON)
        {
            SendClientMessage(playerid, -1, ""#COL_WHITE"> You have "#COL_RED"stopped"#COL_WHITE" the engine");
            GetPlayerName(playerid, sendername, sizeof(sendername));
            format(string, sizeof(string), "* %s extends his hand towards the ignition, twisting the keys.", sendername);
            ProxDetector(30.0, playerid, string, COLOR_PURPLE,COLOR_PURPLE,COLOR_PURPLE,COLOR_PURPLE,COLOR_PURPLE);
            SetVehicleParamsEx(vid,VEHICLE_PARAMS_OFF,lights,alarm,doors,bonnet,boot,objective);
        }
        return 1;
    }