[Zope] Evaluating DTML Tags in a string ?

Hello, here is another of my "think around too many corners" questions... I've got a zclass which has a string property called text. This string may include a <dtml-var> tag, which doesn't gets evaluated when called with <dtml-var text>. Any hints ?? I already thought about using HTMLFile and StringIO in a python base class. Sascha -- .-> Sascha Matzke - sascha@bespin.de - http://www.bespin.de -. | Eure Moral, Eure MGs werden nicht ewig regier'n... | | Anarchist Academy | `-- On this earth for 23 years, 363 days <----------------'