load and parse xml data

How I can setup parse rules for various xml structure data?

var store = new webix.DataCollection();
store.load(‘data/events.xml’, ‘xml’);

store.getFirstId(); //undefined
data:
http://webix.com/snippet/df486645

PS

It will appear on the forum mechanism for attaching the source code ?

I find it.
http://webix.com/snippet/1d4a4717