[Zope] Indexing files

[Sune Christiansen]

Hei All.

I have the following problem:
I am building up a ZCatalog and indexing my DTML methods. I use the index
type ZCTextIndex and the object function PrincipiaSearchSource. It works
fine.
But when I try to index my Files (type File) with index type ZCTextIndex
and the object function SearchableText it finds no words and the index is
empty. Am I using the wrong object function?

Thanks,

Sune