can_change_single_heir_dynasty_house_succession_law_trigger

can_change_single_heir_dynasty_house_succession_law_trigger = {
	trigger_if = {
		limit = {
			culture = {
				OR = {
					this = culture:czech
					this = culture:slovien
					any_parent_culture_or_above = {
						this = culture:czech
					}
					any_parent_culture_or_above = {
						this = culture:slovien
					}
				}
			}
			NOT = {
				has_realm_law_flag = can_change_succession_laws
			}
		}
		culture = {
			has_innovation = innovation_table_of_princes
		}
	}
	trigger_else = {
		can_change_succession_laws_realm_flag_trigger = yes
	}
	custom_description = {
		text = "no_powerful_vassal_with_negative_opinion"
		NOT = {
			any_vassal = {
				is_powerful_vassal = yes
				opposes_succession_law_change_trigger = yes
			}
		}
	}
}

As written in game/common/scripted_triggers/00_legal_triggers.txt.