Returns the serial number of the last day of the month before or after a specified number of months.
| Name | Type | Description |
| arg1 | any | Is a serial date number that represents the start date. |
| arg2 | any | Is the number of months before or after the start_date. |
builder.CreateFile("xlsx");
const oWorksheet = Api.GetActiveSheet();
var oFunction = Api.GetWorksheetFunction();
var ans = oFunction.EOMONTH("3/16/2018", 10);
oWorksheet.GetRange("C1").SetValue(ans);
builder.SaveFile("xlsx", "EOMONTH.xlsx");
builder.CloseFile();