Sets an XML attribute on a set of elements selected by an XPath expression.
Specify the name of the XML attribute. This name can contain a namespace prefix if the prefix has been previously defined in this policy.
XPath 1.0 expression that returns a node set containing the elements on which the XML attribute should be set.
Specify the value of the XML attribute.
For more information on using XPath expressions with policies, see XPath 1.0 Expressions.