vb:if to if

[Scanu]

Hi :9 i have this code on the header (THAT WORK)

PHP Code:

<vb:if condition="$bbuserinfo['field5']">
<vb:else />
test
</vb:if> 


so i want to do a plugin and i write

PHP Code:

    <hookname>global_start</hookname>
            <phpcode>
    <![CDATA[
if ($bbuserinfo['field5'])
{}
else {
$template_hook['header_userinfo'] .= 'test';
}
]]>
</phpcode> 


But doesn't work, someone can help me?