onQuery.ref.update({
                        st_name: sname,
                        st_machine: smachine
                    });
                    this.toastText = 'notification-save-station-successfully'
                    this.$.toastAlert.open()
                    this.openStationMainCard()
                } else {
                    this.toastText = 'notification-empty-add-station'
                    this.$.toastAlert.open()
                }
            }

            clearField() {
            