[Zope] PlacelessTranslationService problem

[Milos Prudek]

I installed PlacelessTranslationService but it fails to translate.

My .po file is OK. Zope 2.7 reads it correctly. When I test the 
translation in /Control_Panel/TranslationService/manage_main, it 
translates correctly.

But the simples example from 
http://dev.zope.org/Wikis/DevSite/Projects/ComponentArchitecture/ZPTInternationalizationExamples 
does not translate the message. Here's the example:

<b i18n:translate="" i18n:domain="ibc" i18n:target="string:cz">Good 
morning</b>

What's the problem? Is there some other product that must be installed 
so that i18n markup is processed?

I need this for plain Zope 2.7, without CMF or Plone.

-- 
Milos Prudek