[Zope] how is a method aquired?

Hello, I have two folders /sub1 /sub2 and three dtml-methods /msg (prints "msg in root folder") /sub1/msg (prints "msg in sub1 folder") /sub2/test (&dtml-msg;) when I access my test method it prints "msg in root folder" when I use these URLs http://domain/sub2/test http://domain/sub1/sub2/test why isn't the msg method from sub1 called when using the second URL? Thanks Ulrich