INSERT INTO Bildschirmbuchung (Name, Von, Bis, Wo)
VALUES (
  {{ Input1.text }},
  {{ moment(DatePicker2.formattedDate, "DD/MM/YYYY").format("YYYY-MM-DD") }},
  {{ moment(Datepicker1.formattedDate, "DD/MM/YYYY").format("YYYY-MM-DD") }},
  {{ Input2.text }}
);