war_task_contracts_completion_effect

war_task_contracts_completion_effect = {
	#Join War Contract and Help Claimant Contract
	scope:war = {
		if = {
			limit = {
				any_war_participant = {
					any_character_active_contract = {
						OR = {
							AND = {
								has_task_contract_type = laamp_join_war_contract
								var:task_contract_war ?= scope:war
							}
							AND = {
								has_task_contract_type = laamp_help_claimant_contract
								task_contract_employer = scope:war.primary_attacker
							}
						}
						save_temporary_scope_as = relevant_contract
					}
				}
			}
			scope:relevant_contract = {
				if = {
					limit = {
						scope:war = {
							war_contribution = {
								target = scope:relevant_contract.task_contract_taker
								value > 0
							}
						}
					}
					complete_task_contract = success_standard
				}
				else = {
					complete_task_contract = failure_standard
				}
			}
		}
		if = {
			limit = {
				primary_attacker = {
					has_variable = valuable_prisoners
				}
			}
			primary_attacker = {
				remove_variable = valuable_prisoners
			}
		}
		if = {
			limit = {
				primary_defender = {
					has_variable = valuable_prisoners
				}
			}
			primary_defender = {
				remove_variable = valuable_prisoners
			}
		}
		if = {
			limit = {
				using_civil_war_cb_trigger = yes
				any_war_participant = {
					any_character_active_contract = {
						task_contract_type = laamp_join_faction_contract
						task_contract_employer = {
							is_participant_in_war = scope:war
						}
					}
				}
			}
			every_war_participant = {
				every_character_active_contract = {
					task_contract_type = laamp_join_faction_contract
					limit = {
						task_contract_employer = {
							is_participant_in_war = scope:war
						}
					}
					if = {
						limit = {
							exists = scope:winner
							task_contract_taker = scope:winner
						}
						complete_task_contract = success_standard
					}
					else = {
						complete_task_contract = failure_standard
					}
				}
			}
		}
	}
}

As written in game/common/scripted_effects/07_dlc_ep3_scripted_effects.txt.