hi David,
	Thanks for your reply.  I figured out the problem about 10 minutes
after I posted (isn't that always the way;)).  It was because of the way I
was setting the parameters.  I'm doing transformations on a servlet and when
you set a parameter to a string you have to set it with single quotes inside
of double qoutes and I was only setting it with the double quotes.  You were
right that I was setting it to null elsewhere (on the servlet).  Thanks
again.

	- Heather


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