pam_change_great_schism_progress_effect

pam_change_great_schism_progress_effect = {
	custom_tooltip = $TT$
	hidden_effect = {
		if = {
			limit = { pam_great_schism_progress_can_change_trigger = yes }
			if = {
				limit = { $VALUE$ > 0 }
				situation:the_christian_church = {
					if = {
						limit = { NOT = { has_variable = pam_progress_towards_great_schism } }
						set_variable = { name = pam_progress_towards_great_schism value = 0 }
					}
					change_variable = {
						name = pam_progress_towards_great_schism
						add = $VALUE$
					}
				}
				every_player = {
					limit = {
						faith.religion = religion:christianity_religion
						exists = top_participant_group:the_christian_church
					}
					send_interface_message = {
						type = msg_pam_great_schism_progress
						desc = $TT$
					}
				}
			}
			if = {
				limit = {
					situation:the_christian_church = {
						NOT = { has_variable = pam_great_schism_status }
						pam_great_schism_progress_value >= pam_great_schism_progress_threshold_value
					}
				}
				situation:the_christian_church = {
					pam_update_schism_rite_variables_effect = yes
					var:schism_mainline_rite ?= { save_scope_as = schism_mainline_rite }
					var:schism_competitor_rite ?= { save_scope_as = schism_competitor_rite }
					set_variable = {
						name = pam_great_schism_status
						value = flag:threshold_reached
					}
				}
				scope:schism_mainline_rite.head_of_rite ?= { save_scope_as = schism_mainline_head }
				scope:schism_competitor_rite.head_of_rite ?= { save_scope_as = schism_competitor_head }
				every_player = {
					limit = {
						faith.religion = religion:christianity_religion
						any_character_situation = { this = situation:the_christian_church }
					}
					trigger_event = pam_the_christian_church.0064
				}
			}
		}
	}
}

As written in game/common/scripted_effects/pam_effects.txt.