Yes, the new AGS syntax works consistently with IE11, Edge. Chrome, Safari and Firefox. Bear in mind that if the nodeValue is null, the script just freezes.
FldNbr, MsgNbr and Messsage are always populated, so not at issue. For instance MsgNbr will come across as
219. Or if no error
000 I was interrogating a PA52 screen to see what the user entered value was: they had entered none, since there was no change to the field. The results came back as
I had to put in some if/then logic to check for null, to bypass this.