value is not updating after setState

[diaodiallo]

Hi All,
I have a problem of refreshing my DateTimeFormField after a setState update, do someone having the same problem or I am just missing the right code?

Here is my code:
DateTimeFormField( initialValue: myInitialValue, decoration: const InputDecoration( suffixIcon: Icon(Icons.event_note), labelText: 'Time line', ), mode: DateTimeFieldPickerMode.date, onDateSelected: (DateTime value) { myInitialValue = value; }, ),
Then hope to see the date changing after a:
setState(() { myInitialValue = value; });

I was hoping to have something like a controller here but can't find it.

Thanks in advance