I have the same problem.

imo error "XPTY0004: Cannot create an attribute node whose parent is a document node" should be returned.

You could also use xquery update for tasks like this.
In the xquery builder select saxon EE and in settings check "enable xq update" and "use linked tree model" and enter the code

thanks its working now.

Saxon extension functions already work ... right, I just tried the wrong function: declare namespace file = "http://expath.org/ns/file"; file:base-dir() results in the error: "Cannot find a matching 0-argument function named {http://expath.org/ns/file}base-dir()" while it works ...

I'm evaluating oxygen developer. If I understand correctly it comes with a full saxon EE (usable only inside oygen). But I can't use all the EE features. eg XQuery 3.1 (Schema Aware) and Saxon extension functions (Basic+Adavanced) are not avaiable, while the EE features XQuery Update 1.0 and higher ...

Hi, I'm just evaluating oxygen and I like it a lot, but I'm struggling with the debugger. First of all when I step through the code, it jumps around wildly. I understand, that XQuery is not a imperative language, but why arent't for example even successive let-clauses processed in order...? Also it'...

I try to run xquery from xproc. But with the files below I get the error "Content is not allowed in prolog" in the file hello.xquery. It seems like a wrong saxon version is used (which can't handle xquery) What to do? <?xml version="1.0" encoding="UTF-8"?> <test>Hello, ...