Automation

Hello Everyone, 
I would like to ask some help in referencing a value of an attribute node for a NETCONF Proxy Telemetry Sensor!

I'm following the corresponding documentation , so I'm using it as example here too, because it includes exactly the same challange I'm facing with currently.  
This example creates a yang module which creates a sensor using the output of  the show system users command to provide telemetry data. 

My challenge is around this line of the command's XML output: 

<up-time junos:seconds="17710200">204 days, 23:30</up-time>

The aforementioned example is using the up-time XML tag to reference the uptime in the output: 

      leaf up-time { // YANG model leaf
        type string; // Type of value
        dr:source up-time; // Exact name of the XML tag
      }

Problem is the following: the streamed value via the sensor data is the "204 days, 23:30" in this case. But I would like to have streamed the value of the "junos:second" attribute node rather. 
My assumption is the dr:source should be followed  by an Xpath expression point to this node, but I could not find a working one until now. 
If anyone could help to reference this value in this context with an example, that would be awesome!
I have tried varous XPath expressions, but without success until now.  
Many thanks, 

To reference an attribute in Xpath would be in this example:

up-time/@junos:seconds

A great source of information about XML and Junos can be found here in the Day One books archive:

Day One Books Archive

Navigating the Junos XML Hierarchy, it is an old book, I first read it many years ago, but was a great introduction back then when I was first learning SLAX.

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Andy Sharp
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<up-time junos:seconds="17710200">204 days, 23:30</up-time>

      leaf up-time { // YANG model leaf        type string; // Type of value        dr:source up-time; // Exact name of the XML tag      }