I would like to achieve following. I do have a form where I inout in New Form a Date. Based on this Date I would like to set another Field just with the Year of the Date Field on Change.
Meaning, when a Date is set to 18.07.2018 the other field shall be set to 2018 but still being able to changed manually. When the Date Field is changed to 18.07.2017, the other field is set to 2017 but still being able to changed manually.