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Your xpath doesn't match your XML - you are missing the root node in your xpath expression:
Expression: /process_data/myXML/records/record[1]/emailshould be:
/process_data/myXML/root/records/record[1]/email
When you build your loop there is one other thing to be careful of. If you evaluate an xpath variable inside of another xpath expression, it gets inserted as a string. This happens even if the variable is an integer. For example: If I have an integer variable counter which is set to 3 and evaluate:
/process_data/myXML/root/records/record[/process_data/@counter]/email The xpath expression will insert "3" (a string) and not an integer as you would expect. The result will not be the third node. This can be a source of frustration and its hard to debug.
Instead, use the number function inside the expression:
/process_data/myXML/root/records/record[number(/process_data/@counter)]/email
I've attached a sample process that shows this.
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