Render of xAxis label by bar chart with series

Webix JS
1

Snippet: http://webix.com/snippet/df539265

I’d like to show the xAxis label always below the 0% line.
if the first value is negative in sereies (eg.: at UK series), then the label will be force rendered above the 0% line.

Could you suggest me a workaround.
Many Thanks.

2

It is possible to define template for xAxis labels as a function and set different classnames for positive and negative values:

http://webix.com/snippet/27abbff2