having a rough time

at member.php, start update profile, right at the end of $DB_site->query("UPDATE user SET ......);

I started a new query (which insert statement works at register.php)

mysql_query("UPDATE orgbook.users SET uemail='".addslashes(htmlspecialchars($email))."' WHERE userid='$userinfo[userid]'");

It is not updating the other database. the password change appears to work. Where exactly should I place that update statement in order to have the other database updated when vb email is changed?

Thank you