need help Configuring Comodo for specific application ONLY when vpn is active

I am new to Comodo and was wondering if anyone could help me configure utorrent to ONLY work when connected to my vpn(BTGuard) and not work otherwise.

i have windows 7 32bit
Comodo firewall(free)
utorrent
vpn(BTGuard) dynamic IP

i have the vpn working with the vpn but it also works with my regular connection.
when i disconnect the vpn it seems to kill all up/downloads for apx. 1 minute and then they kick back in at higher speeds(understandable).
How do i set up the zone and rules correctly to make utorrent inactive when my vpn connection is lost or stopped?

any help is greatly appreciated in this matter and again i am new to Comodo.

thank you