//contador para pines por dia, guarda la variable oldPinDate e preferencias

    var pinCounter = 0
    var pinLimit = 5

    var date: Date
    var formatter: DateFormatter

    var oldPinDate: String
    var currentDate: String

    @IBAction func subirAlerta(_ sender: Any) {
        formatter.dateFormat = "dd.MM.yyyy"
        currentDate = formatter.string(from: date)
        if(currentDate != oldPinDate){
            pinCounter = 0
        }
        pinCounter += 1
        if(pinCounter < pinLimit){
            uploadPin(title: "Alerta", subtitle: subtitulo.text!, lat: (gps.location?.coordinate.latitude)!, lon: (gps.location?.coordinate.longitude)!)
            btPin(titulo: "Alerta", subtitulo: subtitulo.text!, lat: (gps.location?.coordinate.latitude)!, long: (gps.location?.coordinate.longitude)!)
        }else{
            oldPinDate = formatter.string(from: date)
            //guardar fecha en preferencias
            let alert = UIAlertController(title: "Alert", message: "Ya subiste suficientes pines", preferredStyle: UIAlertControllerStyle.alert)
            alert.addAction(UIAlertAction(title: "Click", style: UIAlertActionStyle.default, handler: nil))
            self.present(alert, animated: true, completion: nil)
        }
        menuPinIsShown = false;
        ponerPin.isHidden = true;
    }