XML parser - how to include two attributes?

Hi all,

Does anyone have a tip for me on how to define the parser rule to translate XXX below?

UML:TaggedValue tag="documentation" value="XXX"

I added it as An Atribute in XPath:

//UML:TaggedValue/@value

But I do not know how to define that tag="documentation" is also considered?

Any tips are most welcome.

Thank you in advance

Agija