Limit Allow Dynamic URL for [IMG] Tags

[dynamite]

Is there a way to limit users from being able to post Dynamic URLs in IMG tags unless they are in a certain group? I know I would need to edit the following in includes/functions_bbcodeparse.php:

PHP Code:

$bbcode = preg_replace('#\[img\]\s*(https?://([^<>*"' . iif(!$vboptions['allowdynimg'], '?&') . ']+|[a-z0-9/\\._\- !]+))\[/img\]#iUe', "handle_bbcode_img_match('\\1')", $bbcode); 


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Could someone tell me if changing this line to the following would allow only that particular usergroup to post dynamic URLs:

PHP Code:

$bbcode = preg_replace('#\[img\]\s*(https?://([^<>*"' . iif(!$vboptions['allowdynimg'] AND $bbuserinfo['usergroupid'] == 3, '?&') . ']+|[a-z0-9/\\._\- !]+))\[/img\]#iUe', "handle_bbcode_img_match('\\1')", $bbcode);