For those of you who saw my posts from a couple of days ago (Dieter Maurer and Geir Bfkholt), this is the question that I think I should have been asking in the first place. I have a standard_html_header that is inserted into Zclasses. These Zclasses have properties including meta_author, meta_description etc (I don't think it is important what they are, just that they are properties that standard_html_header does not have). In the standard_html_header, I use code such as <dtml-var meta_author> and <dtml-var meta_description>. This works fine and the properties of the *zclass* are inserted. However, if I put <dtml-var id> into the standard_html_header, I get the id of standard_html_header, *not* of the zclass. How do I tell zope to which item I am refering (bearing in mind, I don't know the name of the zclass ie it is variable)? Cheers tim ps. As a workaround, I have simply given my zclasses an alternative property (counter_id) that I make the same as the real id, but this seems to be a clumsy way of doing it.