post pop-up menu conditional

[zetetic]

I'm trying to add something to the post popup menu that's conditional based on whether the user is on your buddylist. This is as close as I can guess, but it doesn't seem to work:

<if condition="in_array($post[userid], $bbuserinfo[buddylist])">

Any idea how to make that work?

Okay after many hours of poking around and trying different things, at this point I'm guessing my question above doesn't even make sense. I would think what I'm trying to do is very simple, but so far it doesn't seem to be. I want to put a conditional in the postbit template so that "Add {user} to your buddylist" becomes "Remove {user} from your buddylist" if they're already your buddy. At this point I think I have a better chance of building a car that gets 1000 miles to a gallon of water.