Awstats on sub-domains?

[mkrve]

If i turn on statistics on a domain, it creates the /plesk-stat/ dir...
if i watch this, i get a nice working awstats...but...

If the domain has sub-domains... i only get 1 awstats for the main domain and all subdomains. i would like a seperate awstats for every sub-domain. is this possible?

for example i have the domain : www.example.com
and the subdomains: test.example.com and home.example.com

now only the main domain has a /plesk-stat/ dir on www.example.com/plesk-stat/
and it shows the combined statistics for the main domain and all sub-domains

i would like www.example.com/plesk-stat/ to show only the statistics of www.example.com and have seperate /plesk-stat/ dirs on the subdomains like :
test.example.com/plesk-stat/
home.example.com/plesk-stat/

is this possible?
how do i do this?