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passing in a Null value as a parameter to a webservice

I am trying to pass in a value of null to a webservice
parameter.
I 've tried xsi:nil="true" attribute on the parameter
tag. But it is not recognizing the value as null. Is
there any thing else I need to specify? Any help would be
greatly apreciated.

here is part of soap message for the parameter going in
to webservice
<test xsi:nil="true" /></test>

Nov 11 '05 #1
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