No boolean value in checkbox with datatable

Webix JS
1

I found strange behavior in checkbox fields in datatable.
http://webix.com/snippet/7679bdf5
The data setup as boolean values, but when I click checkbox data have number values.

2

You can set the checkValue and uncheckValue properties, if you prefer different results. ( by default checkValue = 1 and uncheckValue = 0 )

http://docs.webix.com/desktop__editing.html#checkbox