The insertItemAt method insert a new item in a combo box or a list box.
insertItemAt(System.String cName, System.Boolean bExportValue, System.Int32 nIdx);
cName
name of the new item.
bExportValue
[Optional] Exported value when the item is selected.
nIdx
[Optional] Index where the item will insert. Zero for the first item and -1 to the end. If it is not specified, it will select the current item.
Member of field.