Remedy Webservice to HelpDesk newbie question

[Ravi]

Hi: I have webservice through which an external source submits updates 
to tickets in Help Desk. This webservice has 5 fields. Sometimes one or 
more of these fields have a NULL or empty string. In that case I donot 
want to change the field value in help desk. Since there is no filter 
between the webservice and HelpDesk, how do I prevent a field getting 
overwritten if the field value in webservice submission is empty or NULL.

Thanks
Ravi
_______________________________________________________________________________
UNSUBSCRIBE or access ARSlist Archives at www.arslist.org ARSlist:"Where the Answers 
Are"