tiki

objects:

 -
  type: category
  ref: workspace_root
  data:
   name: Project $profilerequest:workspace_name$Unknown$
   items:
    - [ wiki page, $wikia ]
    - [ file gallery, $filia ]
    - [ tracker, $traca ]
    - [ calendar, $cala ]

 -
  type: perspective
  ref: workspace_perspective
  data:
   name: Workspace $profilerequest:workspace_
name$Unknown$
   preferences:
    category_jail: $workspace_root

objects:
 -
  type: wiki_page
  ref: wikia
  data:
   name: wiki $profilerequest:workspace_name$Unknown$
   content: xxx
 -
  type: file_gallery
  ref: filia
  data:
   name: Files of $profilerequest:workspace_name$Unknown$
 -
  type: tracker
  ref: traca
  data:
   name: Tasks $profilerequest:workspace_name$Unknown$
 -
  type: calendar
   ref: cala
   data:
    -
     name: $profilerequest:workspace_name$Unknown$

It works perfectly if I remove the calendar bit. But if I include the calendar bit, nothing happens (no category neither any object is created). The syntax for calender bit is as seen from calendar handler. I wonder why is it different from other handlers.