save_commission_epic_loc_variables

save_commission_epic_loc_variables = {
	story_owner = {
		set_variable = {
			name = composition_type
			value = scope:story.var:composition_type
		}
		set_variable = {
			name = composition_detail
			value = scope:story.var:composition_detail
		}
		if = {
			limit = {
				exists = scope:story.var:composer
			}
			set_variable = {
				name = composer_exists
				value = yes
			}
			scope:story.var:composer = {
				save_scope_as = composer
			}
		}
	}
}

As written in game/common/scripted_effects/00_diplomacy_perk_effects.txt.