help with facebook for blackberry please?

[Meri]

i have facebook installed on my blackberry curve 8320. However, i get notifications both to my email and through the facebook application. how do i stop getting the notifications to my email, but still get them through the facebook application? when i go into my notification settings i disable getting notifications via email, but then i stop getting them via the facebook application.

i just want to receive notifications via the facebook application
i edited my mail notifications on facebook.com.

however, strangely i don't have settings for "facebook for blackberry" in my account settings