I'm not sure whether I'm missing something or not...
How do I assign a folder location on the N900 to sync with a dropbox equivalent folder?

I've added the dropbox folders in the settings for both the dropbox location and the download location on the n900...

I cannot get the two to sync when I hit the sync option.
I would like whatever I've placed in that particular folder on the N900 to be uploaded to my drop box account.

Any suggestions?

btw the media sync option works fine and uploads my media files to the dbox account.