public ParameterValue Evaluate(IList <ParameterValue> parameters, EvaluationContext context)
        {
            CellValue[,] args = parameters[0].ArrayValue;
            int xDim = args.GetLength(0);
            int yDim = args.GetLength(1);

            CellValue[,] result = new CellValue[xDim, yDim];

            for (int n = 0; n < args.GetLength(0); n++)
            {
                for (int m = 0; m < result.GetLength(1); m++)
                {
                    double coeff = (args[n, m].NumericValue == 0) ? 1 : args[n, m].NumericValue;
                    result[n, m] = (n + 1) * (m + 1) * coeff;
                }
            }

            return(result);
        }