Different title image for one forum?

[PVO_Dave]

Please help me before I go mental from trying everything I can think of and searching the hell out of google

I'm trying to simply get the header to display a different logo if the forum ID = 33

My closest effort (as in not just seeing the x) so far was this:

<vb:if condition="$foruminfo[forumid] == 33">images/cowshed.png<vb:else />{vb:stylevar titleimage}</vb:if>" alt="{vb:rawphrase x_powered_by_vbulletin, {vb:raw vboptions.bbtitle}}

but that just displays the main logo

Any thoughts?

Ta,
Dave.