Hi Ian,

thanks for the hint with the GetValueAt.
I had already tried this once, but discarded it due to a structural problem with the XML and did not try again after correcting the structure.  

🤯

set x = ##class(EnsLib.EDI.XML.Document).%OpenId(554)
set numdoc = x.GetValueAt("Documents(*)")
w numdoc
10

Kind regards

Armin

Thank you very much, that was the right hint.
As it is a Rest Service that does not contain a CSP in the path, I had to edit the default path directly. But that is not a problem in my scenario.

Kind regards 

Armin

Intersystems REST Api for Metrics

For anyone who wants to take a look at the api