Future Creations Date

script

var p = Prompt.create();

p.title = "Date";

p.addDatePicker("dtCreated", "Created At", draft.createdAt , {
  "mode": "dateAndTime"
});
p.addButton("OK");

var didSelect = p.show();

var startDate = p.fieldValues["dtCreated"];

if (p.buttonPressed == "OK") {
  draft.createdAt = startDate;
  draft.update();
}