text: public ValueEval Evaluate(ValueEval[] args, OperationEvaluationContext ec){if (args.Length == 2){return Evaluate(ec.RowIndex, ec.ColumnIndex, args[0], args[1]);}if (args.Length == 3){return Evaluate(ec.RowIndex, ec.ColumnIndex, args[0], args[1], args[2]);}return ErrorEval.VALUE_INVALID;}