I don't think "preter" is the right preposition here. It should be "trans". "Preter" usually means in a direction parallel and next to something, doesn't it? I'm a bit unsure of my command of the language now...
According to Lernu's dictionary:
by, straight past, beyond, past
Probably I'm mistaken. I've never really used preter much, except in the expression preteriri. Guess it's correct then. Didn't think the course could still teach me something. ;)