pass username and id to a php page in vbulletin

[ohadpartuck]

hi,
I tried to pass the variable value by doing this
in the global start hook:

PHP Code:

$arr = $vbulletin->userinfo;

$aaa = $arr["username"]; 


and in the php page which is in a iframe in a vbulletin template here

PHP Code:

<iframe id="livechat" frameborder="0" width="100%" height="900" allowtransparency="true" marginwidth="0" marginheight="0" src="http://www.mydomain.com/mypage.php"></iframe> 


and the page it self is

PHP Code:

echo "aaa is " . $aaa;