Ending experiment with point criteria

[Nega100]

Hi Josh
My condition timeline now can work well, unfortunately what I really needed is to end experiment when condition criteria not meet. Can I do this?

var two_feedback = {
      type: 'html-keyboard-response',
      stimulus: " ",
      choices: jsPsych.NO_KEYS,
      trial_duration: 7000,
      on_finish: function(data) {
        data.task2back = jsPsych.data.get().filter({even: '2-back', correct: true}).last(nback_length-2).count();
        console.log(data.task2back)  // even the data is 0.2 the experiment still continue
        if(data.task2back < 0.7) {
          jsPsych.endExperiment('Too many error!.')
        }
      }
  };
  timeline.push(two_feedback);

This still not work and I cant find other discussion about this topic. Again thanks for your help!!