Hi qnangIfsh,
Per my test, it is by designer the custom workflow action 'Set InfoPath field inner xml at' and 'Get InfoPath field inner text at' are not working in SharePoint Designer 2013.
Best Regards,
Lisa Chen
TechNet Community Support
Please remember to mark the replies as answers if they help, and unmark the answers if they provide no help. If you have feedback for TechNet Support, contact
tnmff@microsoft.com.
