coronation_weaken_detractors_opinion_effect

coronation_weaken_detractors_opinion_effect = {
	involved_activity = {
		if = {
			limit = {
				any_attending_character = {
					is_vassal_of = root
					has_vassal_stance = belligerent
					NOT = { is_in_guest_subset = { name = detractor } }
				}
			}
			every_attending_character = {
				limit = {
					is_vassal_of = root
					has_vassal_stance = belligerent
					NOT = { is_in_guest_subset = { name = detractor } }
					opinion = {
						target = root
						value < 100
					}
				}
				custom = weaken_detractors_opinion
				add_opinion = {
					target = root
					modifier = impressed_opinion
					opinion = 5
				}
			}
		}
	}
}

As written in game/common/scripted_effects/10_ach_effects.txt.