[Zope] TALES expression

Hi! Please consider this TALES expression: <div class="DataPrevista" tal:content='here/getDataInici | string: nosta' /> If I try this other: <div tal:content='string:${here/getDataInici}' /> the result is <div>None</div> Then the first one will render the alternate expression isn't it? Then with it renders <div class="DataPrevista" /> ? Thanks! -- Mis Cosas http://blogs.sistes.net/Garito Zope Smart Manager http://blogs.sistes.net/Garito/670