how to code an If Else Statement that has a condition if the 5th option in flutter is selected?

May i ask on how can i code a statement and condition to let flutter know that the fifth option on list.generate is selected?

List<Answerlist> usingCollection = [
Answerlist('excellent', 'Excellent'),
Answerlist('verygood', 'Very Good'),
Answerlist('good', 'Good'),
Answerlist('fair', 'Fair'),
Answerlist('poor', 'Poor'),
];

list.generate(usingcollection.length,(int index)
{
  return GestureDetector
  (onTapUp: (detail)
  {
     if(Answerlist == //5th index is selected)
     {
       statustype = 'Poor'
     }
  }
}

Then on the Hero Code on flutter which is on the same dart file,, not two dart file

if (widget.statusType == 'Poor') {
      imgPath = 'images/sad.gif';
      msg = 'We are so sorry. What we did wrong?';
      feedbackList = [
        Feedback('Not helpful and not thoughful', false),
        Feedback('Slow and not responsive', false),
        Feedback('Support line is always busy', false),
        Feedback('Confusing', false),
        Feedback('Other', false),
      ];
    }

i was hoping it should show a screen like a hero style on flutter that will show this other option to indicate whats wrong why they choose this option?,,

please let me know if i did something wrong thank you for all the help