Customizing the display all contents of subfolders button

Is it possible through coding a new button to specify how deep we want it to go? For my purposes going only one directory would be plenty for working quickly (in Program Files, for example). I have tried looking at it but I don't think it is possible, if I'm wrong can someone please let me know before I give up. Thanks!

you could use the parameter "maxdepth"

eg.
to have only the directories of root level containing a +

GO PATH="C:\"  FOLDERCONTENT="nofiles,maxdepth=1,dirfilter=*+*,button"