did try the following with no luck on the array
Code:
<vb:if condition="in_array($forum['forumid'], array(86,87,88,89))">
<vb:if condition="$post['isfirstshown'] AND $post[field54]"><div style="border:1px solid #ccc; padding:7px;background-color:#ffeb90;">{vb:raw post.username} will ship to the following countries: {vb:raw post.field54} </div><br />
</vb:if>
</vb:if>