Email Variables - Last name only

Hello all!

I was just wondering if there is an email variable that pulls only a person’s last name rather than full name?

For example, in addressing, the variable used currently pulls full name so emails are addressed: Dear Dr. Heather Onorati

I would like to find a way to edit this to: Dear Dr. Onorati

Is there a variable for just the last name? Using OJS

Thanks very much!!

It looks like there is no Last Name in the variables list.

I tried {$lastName}, {$familyName} but it didn’t work.
It would be very helpful if the experts tell us how we can use it.