I'll try...
In $SPECROOT/Notifier/.alarmrc set up the attributes that you want to pass, like so:
EXTRA_ATTRS_AS_ENVVARS=0x11f7e,0x1134b
Then within the SetScripts - they may be referred to as "$SANM_0xXXXXXX" (we use shell scripts for our Notifiers)
IFALIAS="$SANM_0x11f7e"
IFDESC="$SANM_0x1134b"
NEWEVMSG="BAD LINK DETECTED Port Descr=$IFALIAS Interface=$IFDESC"
# Note: Windows will uppercase these variables, so they need to be referenced
# that way - ie. $SANM_0X100C5 and $SANM_0X11F84.
Looking for this note - it seems the example is pretty much the same in the Sample SetScripts provided with the installation - they do a bit better explaining too.