Getting CardDav Contacts with Ti.Contacts

Hi,

on an iPad Application (Ti 3.2.2, iOS7.1) im trying to get all contacts out of the addressbook. The Contacts are synced over an Exchange CardDav.

var people = Ti.Contacts.getAllPeople();
 
Ti.API.info('Total contacts: ' + people.length);

But the result is, that i only got the contacts of my local contact storage. Is there any chance to get every contact independent of the storage?