ep3_decrease_resistance_effect

ep3_decrease_resistance_effect = {
	save_scope_as = origin_char
	if = {
		limit = { scope:story.var:resistance != 0 }
		scope:story = {
			change_variable = {
				name = resistance
				add = -1
			}
		}
		set_variable = {
			name = resistance_gui
			value = scope:story.var:resistance
		}
		if = { #Display in red if Anglo-Saxon
			limit = {
				culture = culture:anglo_saxon
			}
			custom_tooltip = ep3_decrease_resistance_effect_tt_negative
		}
		else = { #Otherwise in green
			custom_tooltip = ep3_decrease_resistance_effect_tt_positive
		}

		if = {
			limit = {
				exists = scope:story.var:ruler_england
			}
			scope:story.var:ruler_england = {
				send_interface_message = {
					type = msg_resistance_falls
					title = harrying.notification_resistance_fall
					desc = harrying_resistance_fall
				}
			}
		}

		if = {
			limit = {
				character:90028 = {
					is_alive = yes
					NOT = {
						has_character_flag = hereward_settled_flag
					}
				}
			}
			character:90028 = {
				send_interface_message = {
					type = msg_resistance_falls
					title = harrying.notification_resistance_fall
					desc = harrying_resistance_fall
				}
			}
		}

		if = {
			limit = {
				scope:story.var:ruler_england = {
					any_vassal = {
						culture = culture:anglo_saxon
					}
				}
			}
			scope:story.var:ruler_england = {
				every_vassal = {
					limit = {
						culture = culture:anglo_saxon
					}
					send_interface_message = {
						type = msg_resistance_falls
						title = harrying.notification_resistance_fall
						desc = harrying_resistance_fall
					}
				}
			}
		}
	}
}

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