How to access $record in RelationManager inside Repeater Select

Action::make('Serve')
->form([
    Section::make('')->schema([
        Placeholder::make('Type')
            ->content(fn (Model $record): string => $record->bloodType->description),
        Placeholder::make('Component')
            ->content(fn (Model $record): string => $record->bloodComponent->description),
        Placeholder::make('Quantity')
            ->content(fn (Model $record): string => $record->qty),
    ])
    ->columns(3),
    Repeater::make('order')
        ->relationship('dispositions')
        ->simple(
            Select::make('disposition')
                ->searchable()
                ->getSearchResultsUsing(function ($record, string $search) { 

                        dd($record); //ALWAYS NULL

                    }
                )
                ->getOptionLabelUsing(fn ($value): ?string => Disposition::find($value)?->serial),
        )
        ->columns(2)
]),