How to compare two integers in Hugo template?

Why this code not working when $zero == 0?

{{ if eq $zero 0 }}
 some html
{{ end }}

All template code is here:

I you use Hugo 0.13, this is probably it:

Fixed in 0.14-DEV.

Thanks for answer. How I can upgrade to last dev version? (OS X).
And when will be realised 0.14 final?

The answer may be in the doc/README.

You’d have to build from source.