Trying to add a custom profile field to "memberaction_dropdown"

[grecostimpy]

I'm trying to add a custom profile field to the template "memberaction_dropdown"

<vb:if condition condition="$post['field5']">
                <li class="left">
                <img src="{vb:stylevar imgdir_siteicons}/profile.png" alt="" />
    Real Name: $post[field5]
		</li>
</vb:if>

I am completely new to VB4, so please bear with me. I also tried it without the if statement and it just renders Real Name: $post[field5] on my website.

I read something about registering variables, but did not quite understand it. Could that be why my custom profile field is not appearing (memberaction_dropdown not having "post" registered?)

Any help is always greatly appreciated.

Thank you.

Edit: Also tried {vb:raw post.field5} with no luck either.