public function setLastname($lastname)
	{
		if ( $lastname == $this->getLastname() ) { return; }

		$this->_values['lastname'] = (string) $lastname;
		$this->setModified();
	}
public function setLastname($lastname)
	{
		if ( $lastname == $this->getLastname() ) { return; }

		$this->_values['lastname'] = (string) $lastname;
		$this->setModified();
	}
public function setLastname ( $ lastname ) { if ( $ lastname == $ this -> getLastname ( ) ) { return ; } $ this -> _values [ 'lastname' ] = ( string ) $ lastname ; $ this -> setModified ( ) ; }
Sets a new last name of the person.

@param string $lastname New last name of the person
Sets a new last name of the person .