Nintex Forms NF.PeoplePickerApi

Does the NF.PeoplePickerApi available in Nintex Forms for Office 365? I am getting an error when creating an instance of the NF.PeoplePickerApi.

NWF$(document).ready(function(){

     NWF.FormFiller.Events.RegisterAfterReady(function(){

          var ins = new NF.PeoplePickerApi("#" + varPeople);

          ins.search("Ricardo Calingan").done(function(data){

               ins.add(data[0]);

          });

     });

});

Line 3 throws an error, IE (SCRIPT445: Object doesn't support this action) and Chrome (Uncaught TypeError: NF.PeoplePickerApi is not a constructor).