Alarm is not fired for custom rule "DBSS - Days Since Last Backup" (4308341)

Custom rule "DBSS - Days Since Last Backup" is not firing an alarm.

Message of custom rule found in the FMS logs:
YYYY-MM-DD HH:MIN:SEC2.892 VERBOSE [Utility-1-thread-23328] com.quest.nitro.service.rule.service.RuleService - Stopping rule RuleSeverityFamily:
Custom_DaysSinceLastBackup[c0b760f6-c16f-41ff-909c-b2b8b3cc7614] ()
YYYY-MM-DD HH:MIN:SEC.000 INFO    [Timer-8] com.quest.nitro.eu.extension.breakdown.task.TaskManager - Scheduling task.

Go to Custom rule "DBSS - Days Since Last Backup" and add condition -2 to alert alarm.

For example,

Custom condition 1

if (#DBSS_days_since_last_backup_For_Rule# >=5) return true;

Alarm alert condition 2 

return Dbwc_Common_SQL_Server_IsNeedToSendAlarm(scope, "DBSS - Days Since Last Backup", "3", condition);