Plugin code to show for specific usergroup only

[Gripi]

Hello..

how to change this code to work inside the plugin:

show to specific group only:

PHP Code:

<if condition="is_member_of($vbulletin->userinfo, 1, 2, 3)"></if> 


i already try:

PHP Code:

if (is_member_of($vbulletin->userinfo, 1, 2, 3)) {

} 


but no luck.

thanks