Hi,
Yes, you can use it. Once you have regenerated the script using the respective dfe and the data was converted succesfully to xml you can use this function.
For example when you use json to xml dfe in snapshot layout pane in the request body and response body you will be able to view additional tab XML Value from which you will be able to correlate the desired values.
Image may be NSFW.
Clik here to view.
It will genrate web_reg_save_param_xpath correlation step.
web_reg_save_param_xpath(
"ParamName=CorrelationParameter",
"QueryString=/HP_EXTENSION[1]/object[1]/object[1]/pair[2]/text()[1]",
"ReturnXml=No",
"DFEs=JsonXml",
SEARCH_FILTERS,
"Scope=Body",
LAST);
Kind regards,