This article describes how to use the Aspose.Cells library to return a range of values with ICustomFunction in Microsoft Excel. By loading an existing Excel file or creating a new Excel file, we can use the methods provided by Aspose.Cells to get a range of values and return the result. Finally, we save the modified Excel file to disk....for Java 20.8. Please use the AbstractCalculationE class. The...of the AbstractCalculationE class is described in the following...