How do I make unveil access any folder I want when using Firefox?

[d31n1]

First time poster. Forgive me if this is posted in the wrong place.

I am using OpenBSD -current and I am having some issues with unveil and Firefox.

As you know unveil by default only gives Firefox access to ~/Downloads, but I want to be able to download into other folders. I have managed to give Firefox access to ~/Pictures, ~/Documents and ~/Videos by adding
~/Pictures rwc
~/Documents rwc
~/Videos rwc
to /usr/lib/firefox/browser/defaults/preferences/unveil.main, but I can't seem to give access to any other folder in my home folder, such as ~/Dropbox.

I am quite the noob at openbsd and forgive me if this is explained in the unveil man.