Checks whether a value is a reference, and returns TRUE or FALSE.
| Name | Type | Description |
| arg1 | any | Is the value you want to test. Value can refer to a cell, a formula, or a name that refers to a cell, formula, or value. |
builder.CreateFile("xlsx");
var oWorksheet = Api.GetActiveSheet();
var oFunction = Api.GetWorksheetFunction();
oWorksheet.GetRange("A1").SetValue(oFunction.ISREF("A3"));
oWorksheet.GetRange("A2").SetValue(oFunction.ISREF(oWorksheet.GetRange("A3")));
builder.SaveFile("xlsx", "ISREF.xlsx");
builder.CloseFile();