Treetable Sort

I’m having trouble ordering the treetable.
When the data is loaded by JSON, out of order, the sort function by type int does not identify the numbers after the first point, and sorts them according to the order they appear in json as in the example:
http://webix.com/snippet/b4361b3a
Notice the items 1.2.10 and 1.2.11
But items without points are sorted correctly like 10 and 11.

Ok… I got it.
For those who have the same problem, the solution is parse the last number to int and then do the sort:

http://webix.com/snippet/bdeb3d88