@override List<double> get val => [val1, val2, val3, val4, val5, val6];
@override set val(List<num> value) { val1 = value[0].toDouble(); val2 = value[1].toDouble(); val3 = value[2].toDouble(); val4 = value[3].toDouble(); val5 = value[4].toDouble(); val6 = value[5].toDouble(); }