In LUA one attribute of alarm you can see is even_type.
The values which can contains are follows:
ALARM_NONE = 0
ALARM_NEW = 1
ALARM_UPDATE = 2
ALARM_CLOSE = 4
ALARM_ASSIGN = 8
ALARM_UPDATE_SUPP = 16
ALARM_ACK = 32
ALARM_NOTE = 64
ALARM_MESSAGE = 255
ALARM_STATS = 256
GENERIC = 512
TRIGGER_STATE = 4096
INVISIBLE = 8192
REPL_DATA = 16384
ACTIVITY_LOG = 32768
The values are bitwise so for example alarm note update is 66