Returns the number of days between the two dates.
| Name | Type | Description |
| arg1 | number | Start date from which days will be counted. |
| arg2 | number | End date until which days will be counted. |
builder.CreateFile("xlsx");
const oWorksheet = Api.GetActiveSheet();
var oFunction = Api.GetWorksheetFunction();
var ans = oFunction.DAYS("3/31/2018", "3/16/2018");
oWorksheet.GetRange("C1").SetValue(ans);
builder.SaveFile("xlsx", "DAYS.xlsx");
builder.CloseFile();