Concat the XML array value in logstash

Elastic Stack Logstash
20

At least my Logstash complains about the CONCAT stuff in the XPath expression. When I remove that and return to what I gave you earlier, it works as expected:

...
    "response_desc" => [
        [0] "/p:ProcessRepairOrderType[1]/p:ProcessRepairOrderDataArea[1]/p:RepairOrder[1]/p:Job[1]/p:CodesAndCommentsExpanded[1]/p:TechnicianNotes[1] |  Format Error. Length must be up to 255 characters =>Node: TechnicianNotes | RO072",
        [1] "/p:ProcessRepairOrderType[1]/p:ProcessRepairOrderDataArea[1]/p:RepairOrder[1]/p:Job[2]/p:OperationName[1] |  Length must be up to 80 characters =>Node: OperationName | RO063"
    ]
...

I'm out of patience. This is my last response in this thread.