Function IFERROR(ToEvaluate As Variant, Default As Variant) As Variant
'Duplicates Excel 2007 functionality (UDF)
If IsArray(ToEvaluate) Then
IFERROR = IIf(IsError(ToEvaluate(1)), Default, ToEvaluate)
Else
IFERROR = IIf(IsError(ToEvaluate), Default, ToEvaluate)
End If
End Function
1. Open up your workbook
2. Get into VB Editor (Press Alt+F11)
3. Insert a new module (Insert > Module)
4. Copy and Paste in your code (given above)
5. Get out of VBA (Press Alt+Q)
6. Save your sheet