Hi,
Do you mean the feature like this URL:
https://codebeautify.org/xml-to-csv-converter#
for converting XML format to CSV format?
Basically, DevTest does not include this kind of feature.
However, if you have code(or logic) about this type of converting (like http://developprojects.com/code-snippets/how-to-convert-a-xml-file-into-a-csv-file/), you can realize same feature in DevTest by using the Execute Script (JSR-223) Step.
The Execute Script (JSR-223) Step supports scripts below:
•Applescript (for OS X)
•Beanshell
•Freemarker
•Groovy
•JavaScript
•Velocity
But you need to debug after write script in this step.
Cheers,