I am working with the New UX and used "Form" to insert into a numbered list.  I do not want to depend on the end user to create the "code".  Is there a way to add the code to the list item via import?  Cannot import by code because the code does not exist yet.
 
With the Classic UX, I used a module to have the user enter applicable information, then calculated a code.  This calculated code was used in the import to the list.
 
Thanks in advance for ideas