change of one alert notification time

I want to change one of an alert's notification time.

eg. all alerts will have repeat time of 30 mins and disk (or my custom
alert) will have repeat time as 4 hours, tried below configuration but not
working as expected. What am I doing wrong?

HOST=$HOSTS SERVICE=* IGNORE SERVICE=disk
SCRIPT /usr/local/xymon/server/ext/html_mail.pl
user-958778308cc2@xymon.invalid=PLAIN REPEAT=30 RECOVERED NOTICE
SERVICE=disk
SCRIPT /usr/local/xymon/server/ext/html_mail.pl
user-958778308cc2@xymon.invalid=PLAIN REPEAT=240 RECOVERED NOTICE


Thanks,
Deepak