yahoo messenger L7!!!

can someone can confirm this "^(ymsg|ypns|yhoo).?.?.?.?.?.?.?[lwt].\C0\80" works in 4.2???
i set to drop ;;; yahoo messenger
chain=forward action=drop layer7-protocol=yahoo-messenger
8 yahoo-messenger ^(ymsg|ypns|yhoo).?.?.?.?.?.?.?[lwt].
\C0\80

but all the staff still use/open the yahoo messenger

thanks

until now no response?? :frowning: