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You can change the Version number of an Excel file by right-clicking the file and then selecting Properties > Details and then editing the Version number field. Please use BuiltInDocumentPropertyCollection.getDocumentVersion() property to change it programmatically using Aspose.Cells APIs.
The following sample code creates a workbook and changes its built-in document properties that include Title, Authors, and Version number. Please see the output Excel file generated by the code and screenshot that shows the modified Version number by BuiltInDocumentPropertyCollection.getDocumentVersion() property.

const path = require("path");
const AsposeCells = require("aspose.cells.node");
// The path to the documents directory.
const dataDir = path.join(__dirname, "data");
const filePath = path.join(dataDir, "outputSpecifyDocumentVersionOfExcelFile.xlsx");
// Create workbook object
const wb = new AsposeCells.Workbook();
// Access built-in document property collection
const bdpc = wb.getBuiltInDocumentProperties();
// Set the title
bdpc.setTitle("Aspose File Format APIs");
// Set the author
bdpc.setAuthor("Aspose APIs Developers");
// Set the document version
bdpc.setDocumentVersion("Aspose.Cells Version - 18.3");
// Save the workbook in xlsx format
wb.save(filePath, AsposeCells.SaveFormat.Xlsx);
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