string-equal and bags

Test IIC003Policy.xml has this fragment:
        <Condition 
FunctionId="urn:oasis:names:tc:xacml:1.0:function:string-equal">
            <AttributeValue 
DataType="http://www.w3.org/2001/XMLSchema#string">convicted-felon</AttributeValue>
            <SubjectAttributeDesignator 
AttributeId="urn:oasis:names:tc:xacml:1.0:conformance-test:group"
                  DataType="http://www.w3.org/2001/XMLSchema#string"/>
        </Condition>

But SubjectAttributeDesignator returns a bag of strings and string-equal 
doesn't work on bags.

Is the test wrong, or are we missing something?

	/r$

-- 
Rich Salz, Chief Security Architect
DataPower Technology                           http://www.datapower.com
XS40 XML Security Gateway   http://www.datapower.com/products/xs40.html