PHP in Templates and Template Conditionals

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^ use if condition in usercp_nav_messenger template (User Control Panel Templates)
you can put starting of the if condition at the top of usercp_nav_messenger and end it at the bottom (x is usergroup number)

<if $mybb->usergroup['gid'] != x then>
usercp_nav_messenger template code
</if>

please more help

x=2
<if $mybb->usergroup['gid'] != 2 then>
usercp_nav_messenger template code ?
</if>