I have a few questions about CK2 event modding...

[Caliph]

I was wondering why this event kills the player instead of the random courtier?

character_event = {
    id = 999997
    picture = GFX_evt_dead_body_hf
    desc = AYL_text_3
    border = GFX_event_normal_frame_war
   
    is_triggered_only = yes
   
        immediate = {
        hidden_effect = {
            random_courtier = {
                limit = {
                    age = 12
                    host = { character = ROOT }
                }
                save_event_target_as = human_sacrifice_courtier
            }
        }
    }

        option = {
            name = AYL_name_4

        human_sacrifice_courtier = { death = { death_reason = death_murder_unknown killer = ROOT  } }
       
        character_event { id = 999995 days = 2 }
        }
        option = {
            name = AYL_name_5
       
            add_trait = withdrawal
            remove_trait = juiced      
            piety = 25          

        character_event { id = 999996 days = 40 random = 80 }
    }
}

Also I was wondering if there was a way I could make an event trigger on inheriting or gaining an artifact? and is there a way I can get a certain % outcome like 15% chance courtier is killed 85% courtier survives and modifier 'attempted murderer' is added. Thanks for reading this an advice you may have for me would be great!

EDIT: Also is there any way to have multple events selected for the,

character_event { id = 999996 days = 40 random = 80 }

Part of the event and have an event randomly selected from the pile?

 

[Arko]

replace this:
human_sacrifice_courtier = { death = { death_reason = death_murder_unknown killer = ROOT } }
by this:
event_target:human_sacrifice_courtier = { death = { death_reason = death_murder_unknown killer = ROOT } }