Shoutbox visable to certian groups only?

[ArchPrime]

Hi - I have installed Template conditional, and also have Ajax Shoutbox working

I want to make this shoutbox invisable to banned users and guests and those awaiting activation

Editing the Index template (where shoutbox is invoked)

I changed this

{$shoutbox}

to this

<if !in_array($GLOBALS['mybb']->user['usergroup'], array(2,3,4,6)) then>
{$shoutbox}
</if>

but it does not work - I get no error, but with that change, shoutbox is now invisible to ALL user groups

I know nothing about php scripting, and the above is my just my best guess based on other forum postings on similar issues.

I obviously have something wrong though, and would be very grateful for corrected version!

Cheers