Recall Hostage

base = 0
bp2_hostage_return_personality_modifier = {
	HOME_COURT = scope:actor
	WARDEN = scope:recipient
}
opinion_modifier = {
	who = scope:recipient
	opinion_target = scope:actor
	multiplier = 0.5
	desc = AI_OPINION_REASON
}
opinion_modifier = {
	who = scope:recipient
	opinion_target = scope:secondary_recipient
	multiplier = -0.1
	desc = AI_OPINION_REASON
}
bp2_hostage_relation_modifier = yes
modifier = {
	add = intimidated_halved_reason_value
	scope:recipient = {
		has_dread_level_towards = {
			target = scope:actor
			level = 1
		}
	}
	desc = INTIMIDATED_REASON
}
modifier = {
	add = cowed_halved_reason_value
	scope:recipient = {
		has_dread_level_towards = {
			target = scope:actor
			level = 2
		}
	}
	desc = COWED_REASON
}
modifier = {
	exists = scope:secondary_recipient
	add = interaction_recipient_hostage_value
	desc = HOSTAGE_VALUE_RECIPIENT_REASON
}
modifier = {
	add = 25
	scope:secondary_recipient = {
		is_adult = yes
	}
	desc = HOSTAGE_ADULT_REASON
}
modifier = {
	add = -25
	scope:secondary_recipient = {
		hostage_duration = {
			years < 1
		}
	}
	desc = HOSTAGE_MINIMUM_STAY_REASON
}
modifier = {
	add = {
		value = 10
		scope:secondary_recipient = {
			if = {
				limit = {
					hostage_duration = {
						years >= 3
					}
				}
				add = 10
			}
			if = {
				limit = {
					hostage_duration = {
						years >= 4
					}
				}
				add = 10
			}
			if = {
				limit = {
					hostage_duration = {
						years >= 5
					}
				}
				add = 10
			}
			if = {
				limit = {
					hostage_duration = {
						years >= 6
					}
				}
				add = 10
			}
			if = {
				limit = {
					hostage_duration = {
						years >= 7
					}
				}
				add = 10
			}
			if = {
				limit = {
					hostage_duration = {
						years >= 8
					}
				}
				add = 10
			}
			if = {
				limit = {
					hostage_duration = {
						years >= 9
					}
				}
				add = 10
			}
			if = {
				limit = {
					hostage_duration = {
						years >= 10
					}
				}
				add = 10
			}
		}
	}
	scope:secondary_recipient = {
		hostage_duration = {
			years >= 2
		}
	}
	desc = HOSTAGE_DURATION_REASON
}
bp2_hostage_recall_tier_neighbor_modifier = {
	RECALLER = scope:actor
	WARDEN = scope:recipient
}
bp2_hostage_claims_casus_bellis_modifier = {
	SENDER = scope:actor
	RECEIVER = scope:recipient
}
bp2_hostage_recall_vassals_lieges_modifier = {
	RECALLER = scope:actor
	WARDEN = scope:recipient
}
bp2_hostage_relative_strength_modifier = {
	SENDER = scope:recipient
	RECEIVER = scope:actor
}
modifier = {
	desc = HOSTAGE_IMMINENT_THREAT_REASON
	scope:actor = {
		has_any_cb_on = scope:recipient
	}
	scope:actor.current_strength_with_allies_fifty_percent_value > scope:recipient.current_strength_with_allies_value
	add = -25
}
bp2_hostage_culture_faith_modifier = {
	SENDER = scope:actor
	RECEIVER = scope:recipient
}
modifier = {
	scope:recipient = {
		culture = {
			has_cultural_tradition = tradition_equitable
		}
		NOT = {
			any_home_court_hostage = {
				warden = scope:actor
			}
		}
	}
	scope:secondary_recipient = {
		hostage_duration = {
			years >= 2
		}
	}
	add = 25
	desc = HOSTAGE_EQUITABLE_TRADITION_REASON
}
modifier = {
	scope:recipient = {
		culture = {
			has_cultural_tradition = tradition_esteemed_hospitality
		}
		NOT = {
			any_home_court_hostage = {
				warden = scope:actor
			}
		}
	}
	scope:secondary_recipient = {
		hostage_duration = {
			years >= 2
		}
	}
	add = 25
	desc = HOSTAGE_ESTEEMED_HOSPITALITY_TRADITION_REASON
}
modifier = {
	scope:recipient = {
		is_vassal_of = scope:actor
		culture = {
			has_cultural_tradition = tradition_loyal_soldiers
		}
	}
	scope:secondary_recipient = {
		hostage_duration = {
			years >= 2
		}
	}
	add = 25
	desc = HOSTAGE_LOYAL_SUBJECTS_TRADITION_REASON
}
modifier = {
	exists = scope:actor.var:hostage_died
	scope:recipient = {
		NOR = {
			var:let_my_hostage_die ?= scope:actor
			has_opinion_modifier = {
				target = scope:actor
				modifier = killed_hostage_opinion
			}
		}
	}
	desc = HOSTAGE_PREVIOUSLY_DIED_REASON
	add = -25
}
modifier = {
	scope:recipient = {
		var:let_my_hostage_die ?= scope:actor
		NOT = {
			has_opinion_modifier = {
				target = scope:actor
				modifier = killed_hostage_opinion
			}
		}
	}
	desc = HOSTAGE_PREVIOUSLY_DIED_HOME_COURT_REASON
	add = -100
}
modifier = {
	scope:recipient = {
		has_opinion_modifier = {
			target = scope:actor
			modifier = killed_hostage_opinion
		}
	}
	desc = HOSTAGE_KILLED_REASON
	add = -200
}
modifier = {
	scope:actor ?= {
		has_truce = scope:recipient
	}
	desc = HOSTAGE_ACTOR_EXISTING_TRUCE_REASON
	add = 20
}
modifier = {
	scope:recipient ?= {
		is_at_war = yes
	}
	desc = HOSTAGE_AT_WAR_REASON
	add = -25
}
modifier = {
	add = -50
	scope:actor = {
		has_character_modifier = attacked_home_court
	}
	desc = attacked_home_court
}
modifier = {
	scope:hook = yes
	add = 40
	desc = SCHEME_WEAK_HOOK_USED
}
modifier = {
	add = -50
	scope:recipient = {
		any_home_court_hostage = {
			warden = scope:actor
		}
	}
	desc = HOSTAGE_HAS_MINE_REASON
}
modifier = {
	desc = crusading_claim_cb_rea
# … (cut here; the rest is in the file)

As written in game/common/character_interactions/05_bp2_interactions.txt.