Im using the NAME field on my form showing the first and last name opti

Im using the NAME field on my form showing the first and last name options.

I want to be able to copy ONLY the last name value to another field on the same form.

How do I do this?

I can get it to copy the first and last name but I only want the last name value...

You may get the last name if you use the paragraph field and use the paramater

{name:last}

Please check it out and let us know if this fits your requirements.