graphing for namebased virtual hosting

Hi, i have a webserver,(behind a mikrotik firewall,with reverse-proxy) which used to have only one website.
i had a queue for the webservers internal ip, and i am able to get the traffic graph of the server.

but now,ive added a second website on the server, with name based virtual hosting (apache2), and the graph is total traffic of both websites.

how can i get seperate graphics for each website (domain name) ?

thanks

you cannot.

you should use another IP address for second website

that is bad news. thanks