unable to access nested objects with angular ng-repeat

"Private" property access no longer allowed:

https://groups.google.com/forum/#!msg/angular/7l4j70wlPwI/dgt4chDVseAJ

My $scope returns an array. An object within this array that looks like this:

0: Object
$$hashKey: "004"
FIRST_NAME: "DAVID"
LAST_NAME: "SHORT"
_id: Object
$oid: "5286f54e5b5f47d3bd3145bd"

I would like to have access to both FIRST_NAME and $oid. I can get first name like this:

  <li ng-repeat="result in apiResult">
    <form ng-submit="findone()">
      <span type="text" ng-model="searchTerm"  class="">{{result._id}}</span>
      <span class="">{{result.FIRST_NAME}}</span>
      <input class="btn-primary" type="submit" value="go">
    </form>
  </li>

I can not access _id. How can I return the id in this example?