I can't show updates with websockets in open maps

Webix JS
#1

Hi, I have this code: https://snippet.webix.com/rt59j8lj
My problem is I can’t show updates with websockets in open maps, I have my backend working base on this article Websocket: Real-time Data Updates for Webix Widgets, but when I try to implement the frontend with webix nothing happens, maybe the problem is in the line 45 or 55 of the snippet or there is a way to work better with websockets?. Thanks for your help

#2

don’t know if it is the real problem, but data_proxy initialization was in wrong place. check it in your code.
https://snippet.webix.com/mnn4xtrc