Select field : problem with getOptionLabelFromRecordUsing()
Hi ! I'm trying to customize my labels for a Select relationship field but it doesn't work.
And the result is blank
And the result is blank

$record$user// UsersResource.php (Filament Ressource)
Forms\Components\Select::make('interview_by')
->relationship('interviewBy', 'firstname')
->getOptionLabelFromRecordUsing(fn (User $user) => $user->getNickename())// User.php (Model)
public function getNickename(): string
{
return "{$this->firstname} {$this->lastname}";
}->getOptionLabelFromRecordUsing(fn (User $record) => )