Prepopulate First Name and Last Name

Hi

I want to prepopulate both

But in Settings-> Advanced->I only see one field...firstname

How can i prepopulate both (Last Name) ? What is the name of the second field?

https://cl.ly/o8Dk

Thank you

You can use the following code to per-populate which I have created.

English:https://form.jotform.com/73383581881971??fullName[first]=John&fullName[last]=Smith

Spanish:https://form.jotform.com/73383581881971??nombre[first]=John&nombre[last]=Smith

Kindly check on the guide below on how to do so.

https://www.jotform.com/help/71-Prepopulating-Fields-to-Your-JotForm-via-URL-Parameters