Problem in scripting

[hick09]

Hello. I want to make so that during the spymission spy gets into a settlement and there will plague here.
I make script, but it not works.
monitor_event SpyMission MissionSucceeded
and FactionType novgorod
and SettlementName South_Gharhar
add_events
event plague black_death_hits
date 1
position 99, 219
end_add_events
end_monitor

Please help what is the problem with this script?

[Sir Mork]

don't kno how to script that, but you could infest a city with the plague, by first get your spy in a city wit the plague and then after a turn in another city, which he will infect with the plague, heard it works, haven't done it myself though.

[Augustus Lucifer]

Does the monitor ever fire, or is it just that the plague isn't happening? Add a historic event or a counter set in there to insure that the event is firing at all first, that will isolate whether it's an issue with the monitor or the adding of a plague.