About dayTimeDuration in sun.xacml

Hello,
Did some one encounter the problem like this? I wanted to use 
dayTimeDuration datatype in 
<AttributeValue>, however the exception occured when evaluating.And I tried 
yearMonthDuration, it didn't work properly too.

com.sun.xacml.ParsingException: couldn't create 
http://www.w3.org/TR/2002/WD-xqu
ery-operators-20020816#dayTimeDuration attribute based on DOM node

Thanks
Yixin

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