tournament_pivotal_ptv_value_effect

tournament_pivotal_ptv_value_effect = {
	if = {
		limit = { exists = scope:pivotal_contestant.var:progress_to_victory }
		scope:activity = {
			ordered_guest_subset_current_phase = {
				name = qualified
				limit = { exists = var:progress_to_victory }
				order_by = var:progress_to_victory
				save_scope_as = best_contestant
			}
			ordered_guest_subset_current_phase = {
				name = qualified
				limit = { exists = var:progress_to_victory }
				order_by = {
					value = 0 
					subtract = var:progress_to_victory
				}
				save_scope_as = worst_contestant
			}
		}
		save_scope_value_as = {
			name = best_worst_diff
			value = {
				value = scope:best_contestant.var:progress_to_victory
				subtract = scope:worst_contestant.var:progress_to_victory
			}
		}
		save_scope_value_as = {
			name = ptv_half_way
			value = {
				value = scope:worst_contestant.var:progress_to_victory
				add = {
					value = scope:best_worst_diff
					divide = 2
				}
			}
		}
		save_scope_value_as = {
			name = pivotal_best_diff
			value = {
				value = scope:pivotal_contestant.var:progress_to_victory
				subtract = scope:best_contestant.var:progress_to_victory
			}
		}
		save_scope_value_as = {
			name = pivotal_worst_diff
			value = {
				value = scope:pivotal_contestant.var:progress_to_victory
				subtract = scope:worst_contestant.var:progress_to_victory
			}
		}
	}
}

As written in game/common/scripted_effects/04_dlc_ep2_tournament_effects.txt.