[Plugin: Gravity Forms – Update Post] Referencing plugin options in functions.php

This is most likely a silly question, but I can’t seem to figure it out.

Summary: I’d like to enable the delete button and the restriction per role in functions.php instead of directly in the plugin files.

I see that people can enable the delete and role restriction options by directly editing the file: gravityforms-update-post.php:

class GFUpdatePost
{
  public $options = array(
    'request_id' => 'gform_post_id'
    ,'post_status' => 'default'
    ,'capabilities' => array(
      'update' => 'default'
      ,'delete' => 'disable'
    )
    ,'entries' => true
  );

However, I think you can do it by using the plugin options function referenced on the FAQ page (again, I’m no programmer, so I could be way off):

function gform_update_post_id($id)
{
  $options['request_id'] = 'gform_post_id_special';
  return $options;
}
add_filter('gform_update_post_id', 'gform_update_post_id');

Since “capabilities” are a subarray I’m not certain how to reference them in the above code. If switched to:

$options['delete'] = 'enable';

the delete button doesn’t work.

Am I way off track here?

http://wordpress.org/extend/plugins/gravity-forms-update-post/