[MoroDan]

Try this:

PHP Code:

forward ReFill(playerid);
public ReFill(playerid)
{
    if(!IsAtFuelStation(playerid) || !IsPlayerInAnyVehicle(playerid) || VehicleFuel[GetPlayerVehicleID(playerid)] >= 100.0 || GetPlayerCash(playerid) < 1)
    {
        StopRefueling(playerid);
        KillTimer(RefuelingVehicleTimer[playerid]);
    }
    else
    {
        new engine,lights,alarm,doors,bonnet,boot,objective;
        GetVehicleParamsEx(GetPlayerVehicleID(playerid),engine,lights,alarm,doors,bonnet,boot,objective);
        if(engine == VEHICLE_PARAMS_ON)
        {
            KillTimer(RefuelingVehicleTimer[playerid]);
            return StopRefueling(playerid);
        }
        VehicleFuel[GetPlayerVehicleID(playerid)] += 1.0; RefuelingVehiclePrice[playerid] += 30;
        if(VehicleFuel[GetPlayerVehicleID(playerid)] >= 100.0) VehicleFuel[GetPlayerVehicleID(playerid)] = 100.0;
    }
    return true;
} 


Or this:

PHP Code:

stock StopRefueling(playerid)
{
    GivePlayerCash(playerid, -RefuelingVehiclePrice[playerid]);
    SendFormattedMessage(playerid, COLOR_WHITE,"Your vehicle's tank has been refilled for $%d.", RefuelingVehiclePrice[playerid]);
    new mypoint = -1;
    for (new i=0; i<MAX_POINTS; i++)
    {
        if(strcmp(Points[i][Name], "Fossil Fuel Company", true) == 0)
        {
            mypoint = i;
        }
    }
    for(new i = 0; i < sizeof(FamilyInfo); i++)
    {
        if(strcmp(Points[mypoint][Owner], FamilyInfo[i][FamilyName], true) == 0)
        {
            FamilyInfo[i][FamilyBank] = FamilyInfo[i][FamilyBank]+(RefuelingVehiclePrice[playerid]/10);
        }
    }
    KillTimer(RefuelingVehicleTimer[playerid]);
    RefuelingVehicle[playerid] = RefuelingVehiclePrice[playerid] = RefuelingVehicleTimer[playerid] = 0; 
    return true;
} 


Both works .