one form field in a message subject and body

[Doug]

This is part of the script that I am using to mail a form:

  

 // The subject the sent mail should have.
   $defSubject = "Senior Index";

// The body template for the sent mail.
//   ie. %firstname% is used to print the value of the form element named firstname
   $defTemplate = "%lastname%, %firstname%\nFavorite High School Memories: %favorite_high_school_memories% 9th: %9th% 10th: %10th% 11th: %11th% 12th: %12th% Favorite quote: %favorite_quote% Future Plans: %future_plans% ";

What I am trying to do is have the form field “lastname” be the subject of the email that is being sent. I have tried:

$defSubject = "%lastname%";

but it does not work. The script that I am using is phpEasyMail if that is of any help.

[TTT]

$defSubject = $lastname";

$defTemplate = $lastname.", ".$firstname."\nFavorite High School Memories: ".$favorite_high_school_memories;