Parse txt file and create Google form quiz

function myFunction() {  
//  var files = DriveApp.getFilesByName("Grammar test.txt");
//  while (files.hasNext()) {
//    var file = files.next();
//    Logger.log(file.getId());
//    var mimeType = file.getMimeType();
//    Logger.log('MimeType:' + mimeType);
//  }
  
//  var files = DriveApp.getFilesByName("Grammar test.txt");
//  
//    while (files.hasNext()) {
//      var file = files.next();
//      Logger.log(file.getId());
//      var mimeType = file.getMimeType();
//      //Logger.log('MimeType:' + mimeType);
//      
//      //var string = file.getAs(mimeType).getDataAsString();
//      //var string = file.getAs(mimeType).getDataAsString();
//      var lines = file.getAs(mimeType).getDataAsString();
//      //var data = file.getBlob().getDataAsString();
//      // Logger.log('docContent : ' + data );
//      //var lines = string.split('\n');
//      //var line = lines[0];
//      //Logger.log(string);
//      //var s = 's';
//      
//      Logger.log(typeof lines);
//      
//      //var lines = string.split('\n');
//      //var line = lines[0];
//      //Logger.log('Line: '+ line);
//    }
  

//  Logger.log(typeof lines);
//  Logger.log(lines);
      
  
  var file = DriveApp.getFileById('1BKYE4sVMvDvXAea9wqigdZ-z5lFNME-1');
  var mimeType = file.getMimeType();
  var lines = file.getAs(mimeType).getDataAsString().split('\n');
  //var task = lines[0];
//  Logger.log('Line: '+ task);
  var form = FormApp.create('Test all subjects 2').setIsQuiz(true);
  form.setConfirmationMessage('Маленькие человечки проверили твои ответы, ответы можно посмотреть по ссылке ниже');

  var i;
  for (i = 0; i < lines.length; i++) { 
    var line = lines[i];
    var elements = line.split('\t');
    var helpText = elements[0];
    var rightAnswer = elements[1];
    var answer1 = elements[2];
    var answer2 = elements[3];
    var answer3 = elements[4];
    var answer4 = elements[5];
    var feedback = elements[6];
    var category = elements[7];
    
    var item = form.addMultipleChoiceItem();
    item.setTitle(category)
     .setChoices([
       item.createChoice(answer1,rightAnswer == 1?true:false),
       item.createChoice(answer2,rightAnswer == 2?true:false),
       item.createChoice(answer3,rightAnswer == 3?true:false),
       item.createChoice(answer4,rightAnswer == 4?true:false),
      ])
     .showOtherOption(false);
  item.setHelpText(helpText);
  item.setFeedbackForCorrect(FormApp.createFeedback().setText(feedback).build());
  item.setFeedbackForIncorrect(FormApp.createFeedback().setText(feedback).build());
  item.setPoints(5);
  item.setRequired(true);
    //Logger.log('Element: '+ elements[0]);
  }
 
}