text: grader.gradeTask= function(strAnswer, answerToken, callback) {
     platform.getTaskParams(null, null, function(taskParams) {
        var current = task.executeAnswer(strAnswer);
        var score = taskParams.minScore;
        var dest = task.dest[task.level];
        if (current == dest) {
           score = taskParams.maxScore;
        }
        callback(score, '');
     });
  };
  