Whats wrong with this script?

[Eothese]

I can't get the event to trigger at all.

Spoiler Alert, click show to read: 

declare_counter papal_start
declare_counter rome_rally
set_counter papal_start 0
set_counter rome_rally 0
;Pope / Rome / Roman_Province / Power_Centre
declare_counter Rome_siege
monitor_conditions not I_SettlementUnderSiege Rome
set_counter Rome_siege 0
end_monitor
monitor_conditions I_SettlementUnderSiege Rome
and I_CompareCounter Rome_siege = 0
if I_SettlementOwner Rome = papal_states
and I_CompareCounter papal_start 0
create_unit Rome, Papal Guard, num 2, exp 0, arm 1, wep 0
end_if
set_counter Rome_siege 1
set_counter rome_rally 1
end_monitor
monitor_conditions I_SettlementUnderSiege Rome
and I_CompareCounter rome_rally = 1
add_events historic_event faith_rally
end_add_events
end_monitor

[Gigantus]

Empty line after end_monitor?

[Eothese]

Problem solved, it was the add_events and end_add_events that caused the problem. I only figured it out by staring at the America Discovered script until I saw the difference.
Cheers for your continued attention gigantus, you have proved to be a constant and relieable source of useful advice.
+ rep to you good sir!

[Gigantus]

One is glad to be of service