Why aren't these conditionals working?

[BirdOPrey5]

They work fine in 3.8.x, I added the "vb:" to them for 4.0.x but they don't work anymore... In fact they don't resolve to numbers at all, when I write "$thread[forumid]" in the template it just displays on the page "$thread[forumid]" instead of something like "2".

<vb:if condition="($foruminfo[forumid] == 2) AND ($thread[forumid] != 2)">[X]</vb:if>

This is in the threadbit template... are these variables no longer available in threadbit?

Edit- OK I see there is a new syntax for accessing these things in vb4 and boy does that suck big time... anyway Itried a couple things but no go, anything know how to translate the above to vb4? {vb:var thread.forumid} and such isn't working either.

--------------- Added [DATE]1278208778[/DATE] at [TIME]1278208778[/TIME] ---------------

Using this code:

<if condition="({vb:var foruminfo.forumid} == 1) AND ({vb:var thread.forumid} != 1)">
[X]</vb:if>

I get a warning about adding a child to a non-existent node when I try to save the template.