SamBahrami

  var num_obj = 1;

  document.querySelector('crowd-form').onsubmit = function(e) {
    const keypoints = document.querySelector('crowd-bounding-box').value.boundingBoxes || document.querySelector('crowd-bounding-box')._submittableValue.keypoints;
    const labels = keypoints.map(function(p) {
      return p.label;
    });

    if (labels.length != num_obj) {
      e.preventDefault();