Transform method not hit in .getData

Greetings! I'm working through your example (thank you) however running into problems getting the transform to fire.

The docTransform hits every time. But never the transform.

Any ideas?

`Template.SearchResults.helpers({
offender: function() {

return OffenderSearch.getData({
  transform: function (matchText, regExp) {
    console.log('hit transform');
    return matchText.replace(regExp, "<b>$&</b>");
  },

  docTransform: function(doc) {
    console.log('hit docTransform');
    return doc;
  }
});

}`

[s4admin]

You have to pass in a list of fields on the client side for it to work.