template conditional not working on postbit_classic

[rkrusty26]

hello!!

i am using template conditional for my forum http://studentsuvidha.com/forum

but problem is that when i am using this condition(written below) on template postbit then it is working fine but whenever i am trying to use this on postbit_classic or postbit_attachments then this condition is not working. actually i want to show ads within attachment box of first post of any thread.

<if $postcounter == 1 then>
...ad HTML here...
</if>