updateTextFieldValue method
Implementation
void updateTextFieldValue(String id, String newValue) {
final reference = findTextFieldValueIndex(id);
if (reference != null) {
textFieldValues[reference] =
TextFormFieldValueById(id: id, value: newValue);
} else {
textFieldValues = [
TextFormFieldValueById(id: id, value: newValue),
...textFieldValues
];
}
notifyListeners();
}