Relation manager custom action + Spatie media library plugin

Action::make('bom')
                    ->model(Bom::class)
                    ->label('Import Bom')
                    ->form(Bom::getForm())
                    ->action(function ($record, array $data): void {
                        Bom::updateOrCreate([
                            'assembly_id' => $record->id,
                            'bom_name' => $data['bom_name'],
                            'header_row_in_excel' => $data['header_row_in_excel'],
                            'last_row_in_excel' => $data['last_row_in_excel'],
                        ]);
                    })

SpatieMediaLibraryFileUpload::make('bom_file')
                ->collection('bom_files')