Subscriptions + paid ad place below signature

[Mum]

I'm trying to do this, but i can't get it working. this is the code i've used, and i've double checked the group, and field numbers are correct. I've added it in postbit after the signature code that i've quoted.

        <if condition="$post['signature']">
        <!-- sig -->
            <div>
                __________________<br />
                $post[signature]
            </div>
        <!-- / sig -->
        </if>

<if condition="in_array($post[membergroupids],array(6))">
<div id="vBadvertisement">===PAID ADVERTISEMENT===
<br /><a href=$post[field24]>$post[field25]</a>
<br />$post[field26]
<br />==== ==== ==== ==== ====</div>
</if>

What am i doing wrong?