Get data from DataCollection

Hello expert, what I’m doing wrong?
http://webix.com/snippet/2217e538
maybe I missed something, but my basic question is I’m working with DataCollection and I think it don’t return any data it looks like empty. I’ve used the same syntax like here
http://docs.webix.com/api__refs__datacollection.html
and also I don’t need all data from there but only object with the specific id,
my JSON looks like this
[{id: 1,…},
{id: 2,…},

]
and when I’m using this
{view: list,
url: ‘/patients.json’
}
it’s working correct

I solved it thnx