[id] = xlsx.Create(id, filename$)
filename$ until you
call either xlsx.Save() or xlsx.SaveAs() on it.
Nil for auto id selectionNil as argument 1 (see above)
xlsx.Create(1, "test.xlsx")
For Local y = 1 To 100
For Local x = 1 to 30
xlsx.SetCellValue(1, x, y, "Cell " .. x .. "/" .. y)
Next
Next
xlsx.Save(1)
xlsx.Close(1)
The code above will create a new XLSX document and add 30 columns and
100 rows to it. The document will be saved as test.xlsx.