Hello I use a dom builder and I have a problem with a key to validate an id in more than one element.
This key don't work
<xs:key name="IdKey">
<xs:selector xpath="./book/chapter|./book/page"/>
<xs:field xpath="@Id"/>
</xs:key>
but this work
<xs:key name="IdKey">
<xs:selector xpath="./book/page"/>
<xs:field xpath="@Id"/>
</xs:key>
I deduce that | isn't possible in the selector.
How doing this?
