[Zope] Yet another acquisition mysterlet

[Boris Borcic]

Admitting (a) FOO and BAR to be folders
          (b) MET to be a DTML *method* in FOO
              starting with <dtml-in objectValues>...

why can I query

http://mysite/FOO/BAR/objectValues

and get the contents of BAR as expected, while
the request 

http://mysite/FOO/BAR/MET

gets a KeyError on "objectValues" ?

(and how should I access that method ?)

TIA

Boris Borcic