How Check If One Element Or A Group Exists

Hi!
How do I check for the existence of either an element such as an auto Vehicle Id Number (VIN) or a separate group of elements, such as auto body, make, model and year?
I need to know if one (VIN) or the other (group) is supplied. Both may be supplied optionally.
thanks in advance...gary...

Received on Thursday, 30 September 2004 15:20:07 UTC