Programming around vlookup errors in vba
 

I have a program that uses vlookup to find values that are stored in a quote
that is made in excel. Some of the older quotes do no contain all of the
fields (Lookup_Values) that are in the newer quotes. When this occurs, the
excel macro stops and highlights the vlookup function that I am using. Is
there a way to use?
if(iserror(vlookup))then... or any other functions to work around this
problem? If the field does not exist, I would like it to return "" to the
active cell. The program works fine when all of the fields (Lookup_values)
are on the quote.

Code:
Dim ArmatureRange As Range
Set ArmatureRange = Worksheets("Sheet1").Range("H:J")
Armature = (Application.WorksheetFunction.Vlookup("Arm:", ArmatureRange,
3, False))

ActiveCell.Formula = Armature