Multiply nofication Groups

RedHat 7.2 w/ Netsaint 007.

Have been running now for about 6-8month. Monitoring 162 hosts / 189 services with a Compaq Deskpro over a WAN. Works like a champ.

However, I want to have 2 or more contact groups be notified for Service notification.

Example:
service[HOST1]=PING;0;24x7;3;5;1;GROUP1,GROUP2;120;24x7;1;1;0;;check_ping!2000,50%!3000,80%

Only GROUP1 gets notified.

Any help would greatly be appreciated.
Matt.