[Zope] Locate an object in zope tree

Hi Zoppers, My zope tree is : / folder1 object11 folder2 folder3 object31 How to use objet11 in object31, which path is it? I tried <dtml-with "folder1.object11"> but zope can't find this object11 !! Certainly an acquisition problem, but in my case I can't assume the position of folder1, base or url objects are ineffective when you are deep in the tree. Bye, FR.