public CheckGas()
{
    new string[256];
    for(new i=0;i<MAX_PLAYERS;i++)
    {
        if(IsPlayerConnected(i))
        {
            if(GetPlayerState(i) == PLAYER_STATE_DRIVER)
            {
                new vehicle = GetPlayerVehicleID(i);
                if(Gas[vehicle] >= 1)
                {
                    if(Gas[vehicle] <= 10) { PlayerPlaySound(i, 1085, 0.0, 0.0, 0.0); }
                    if(gGas[i] == 1)
                    {
                        format(string, sizeof(string), "~b~~n~~n~~n~~n~~n~~n~~n~~n~~n~~n~~n~Benzina:~w~ %d%",Gas[vehicle]);
                        GameTextForPlayer(i,string,15500,3);
                    }
                    if(IsAPlane(vehicle) || IsABoat(vehicle)) { Gas[vehicle]++; }
                    Gas[vehicle]--;
                }
                else
                {
                    NoFuel[i] = 1;
                    TogglePlayerControllable(i, 0);
                    GameTextForPlayer(i,"~w~~n~~n~~n~~n~~n~~n~~n~~n~No fuel in Vehicle~n~Use /exit to leave the vehicle",1500,3);
                }
            }
        }
    }
    return 1;
}

if(strcmp(cmd, "/fuel", true) == 0)
    {
        if(IsPlayerConnected(playerid))
        {
            if (gGas[playerid] == 0)
                {
                    gGas[playerid] = 1;
                    GameTextForPlayer(playerid, "~n~~n~~n~~n~~n~~n~~n~~p~Fuel Info on", 5000, 5);
                    TextDrawShowForPlayer(playerid,text199);
                    PlayerPlaySound(playerid, 1145, 0.0, 0.0, 0.0);
                }
            else if (gGas[playerid] == 1)
            {
                gGas[playerid] = 0;
                GameTextForPlayer(playerid, "~n~~n~~n~~n~~n~~n~~n~~b~Fuel Info off", 5000, 5);
                PlayerPlaySound(playerid, 1145, 0.0, 0.0, 0.0);
            }
            return 1;
        }
        
    }