[O] Understanding org-agenda-todo-list-sublevels

[lbmlist]

If I have something like:

(setq org-agenda-custom-commands
          '(("Q"  "Q-Who" todo "IMPLEMENT" ((org-agenda-todo-list-sublevels t)))
))

in my .emacs

and I have


*** IMPLEMENT explore slash type [1/3]
 - [X] Explore checkbox list
 - [ ] Look at the export
 - [ ] And so on


*** IMPLEMENT explore percent type [33%]
**** IMPLEMENT the exploration
**** FINISHED an early step
**** PLAN a third subtask


does (org-agenda-todo-list-sublevels t) mean I should see the subtasks in 
the custom view? This doesn't seem to work for me.

I get

 Coding:     IMPLEMENT explore slash type [1/3]


 Coding:     IMPLEMENT  explore percent type [33%]
 Coding:     IMPLEMENT the exploration

alternatively,

how should I set up my custom view to see the subtasks?


Thanks for any assistance,

Louis