How to add Mass Update Function to Opportunities Revenue Line Items Subpanel?

Hi,

I would like to bring the mass update function into the selection array of the revenue line items in the subpanel of the opportunities. Currently the functions "Generate Quote" and "Massdelete" are integrated there:

 .
 .
 .
 'selection' => 
  array (
    'type' => 'multi',
    'actions' => 
    array (
      0 => 
      array (
        'name' => 'quote_button',
        'type' => 'button',
        'label' => 'LBL_GENERATE_QUOTE',
        'primary' => true,
        'events' => 
        array (
          'click' => 'list:massquote:fire',
        ),
        'acl_module' => 'Quotes',
        'acl_action' => 'create',
        'related_fields' => 
        array (
          0 => 'account_id',
          1 => 'account_name',
          2 => 'assigned_user_id',
          3 => 'assigned_user_name',
          4 => 'base_rate',
          5 => 'best_case',
          6 => 'book_value',
          7 => 'category_id',
          8 => 'category_name',
          9 => 'commit_stage',
          10 => 'cost_price',
          11 => 'currency_id',
          12 => 'date_closed',
          13 => 'deal_calc',
          14 => 'likely_case',
          15 => 'list_price',
          16 => 'mft_part_num',
          17 => 'my_favorite',
          18 => 'name',
          19 => 'probability',
          20 => 'product_template_id',
          21 => 'product_template_name',
          22 => 'quote_id',
          23 => 'quote_name',
          24 => 'worst_case',
        ),
      ),
      1 => 
      array (
        'name' => 'massdelete_button',
        'type' => 'button',
        'label' => 'LBL_DELETE',
        'acl_action' => 'delete',
        'primary' => true,
        'events' => 
        array (
          'click' => 'list:massdelete:fire',
        ),
        'related_fields' => 
        array (
          0 => 'sales_stage',
        ),

      ),
    ),
  ),
  .
  .
  .

I would like to add the mass update function here. What options do I have to implement this?

Thank you in advance for your feedback.

Martin
IT Applications
AVM GmbH