HOW-TO Check if user is subscribed to thread?

[Xexiu]

Do you mean this (?):

<if condition="$show['subscribed_to_forum']">
<a href="subscription.php?$session[sessionurl]do=removesubscription&amp;f=$foruminfo[forumid]" rel="nofollow">$vbphrase[unsubscribe_from_this_forum]</a>
<else />
<a href="subscription.php?$session[sessionurl]do=addsubscription&amp;f=$foruminfo[forumid]" rel="nofollow">$vbphrase[subscribe_to_this_forum]</a>
</if>

From forumdisplay template. But when I add the same code to the forumhome_forumbit_level1_post, doesnt work.

Any suggestions?