This function is depreciated, use system.dataset.exportExcel.
Exports the contents of a dataset as an Excel spreadsheet, prompting the user to save the file to disk. Uses the same format as the dataSetToExcelfunction.
system.dataset.exportExcel(filename, showHeaders, dataset)
String filename - A suggested filename to save as.
boolean showHeaders - If true (1), the spreadsheet will include a header row.
Object dataset - A sequence of datasets, one for each sheet in the resulting workbook.
String - The path to the saved file, or None if the action was canceled by the user.