How to change default value of datepicker in runtime on a fiori-App?

After entering the start date in the Fiori app / selecting it using the selection box, one will be asked for the end date. The selection box then starts by default with today. Is it possible to pre-assign the start date to the selection box of the end date during runtime?

In the above example I need the End date to be preassigned to 22. during runtime, while creating the data set.