How Can I Disable The Sidebar Only For A Specific Custom Template?

I created a custom template called single-campaigns.php. It is in my child template folder (boldgrid-hifidel-child). This is the code in my custom template:

<?php
/**
 * The core template of a BoldGrid theme.  If there's no home template
 * then this template gets used.  One of two required WordPress files.
 *
 * @since 2.0
 *
 * @package Prime
 */

if ( ! have_posts() ) :
get_template_part( 'templates/content', 'none' );
endif;

if ( is_archive() ) :
get_template_part( 'templates/entry-header', 'archive' );
endif;

while ( have_posts() ) : the_post();
get_template_part( 'templates/content', get_post_type() !== 'post' ? get_post_type() : get_post_format() );
endwhile;

boldgrid_paging_nav();

Following the instructions on this post: https://www.boldgrid.com/support/question/5181-how-can-i-disable-the-sidebar-for-a-template/, I added the following code snippet (using the Snippets plugin) to disable the sidebars:

function my_custom_theme_configs( $boldgrid_framework_configs ) {
  $boldgrid_framework_configs['template']['sidebar'][] = "is_single";
  $boldgrid_framework_configs['template']['sidebar'][] = "[single-campaign.php]is_page_template";

  return $boldgrid_framework_configs;
}
add_filter( 'boldgrid_theme_framework_config', 'my_custom_theme_configs');

My sidebars are still in place. I am stuck what to do to remove the sidebars for my custom template.