Getting text value from active radio button in Flutter

Question

Hi my goal is to have a list of RadioButtons where each of them will have their unique name. At the top there is a Text() field which will take that name from radio button and update it accordingly to Radio buttons name.

Here is an example:

And when you press Option 2 radio button the Text field changes according to it:

How can I achieve this because Im fairly new to Flutter and Dart. Thanks in advance