extract attribute value in xpath

[Guest chetrity]

hi,simple question I guess but I couldn't find the answer...How to extract the value of an attribute using xPath?for example, lets say this is the xml:<root> <classes> <class> <lesson id="55" /> <lesson id="66" /> <lesson id="88" /> </class > </classes></root>and I want the output to be :556688so the path should be: ...xmlDoc.selectNodes(/classes/class/lesson/???)and I dont know what should be instead of the ???(@id will bring back: id="55" while I need only 55)Thanks

[boen_robot]

How about enclosing the whole expression in a string function like this:

xmlDoc.selectNodes(string(/root/classes/class/lesson/@id))

Or perhaps there is another object to select only the content of the targeted element?