Modifying a CoBlocks Filter in Functions

I’m trying to modify slidestoshow parameter in CoBlocks Carousel block via my theme’s functions. Everything in the Codex implies modifying/passing the variable but looking at the code, it appears it’s an [anonymous function?] Forgive me if this term is incorrect.

I’ve tried both apply_filters() and add_filters() to replace the entire array rather than the individual key/value. I’ve tried removing the existing filter and adding it again but I’m not sure if the way it’s coded is preventing me from making my modification.

Do I need to call the plugin Class CoBlocks_Settings?

Here is the original plugin code:

$  block_content = sprintf( '<div class="%1$  s"><div class="coblocks-slick pb-8" data-slick="%2$  s">',     esc_attr( $  class ),     esc_attr(         wp_json_encode(             /**              * Filter the slick slider carousel settings              *              * @var array Slick slider settings.             */             (array) apply_filters(                 'coblocks_post_carousel_settings',                     array(                     'slidesToScroll' => 1,                     'arrow'          => true,                     'slidesToShow'   => $  attributes['columns'],                     'infinite'       => true,                     'adaptiveHeight' => false,                     'draggable'      => true,                     'responsive'     => array(                         array(                             'breakpoint' => 1024,                             'settings'   => array(                                 'slidesToShow' => 3,                             ),                         ),                         array(                             'breakpoint' => 600,                             'settings'   => array(                                 'slidesToShow' => 2,                             ),                         ),                         array(                             'breakpoint' => 480,                             'settings'   => array(                                 'slidesToShow' => 1,                             ),                         ),                     ),                 )             )         )     ) ); 

First, I tried just overriding it with:

apply_filters( 'coblocks_post_carousel_settings',  array( ... )); 

Second, here’s where I’m at in Functions:

apply_filters( 'coblocks_post_carousel_settings', 'my_filter_coblocks_carousel' ); function my_filter_coblocks_carousel() {     $  carousel = array(         'slidesToScroll' => 1,         'arrow'          => true,         'slidesToShow'   => $  attributes['columns'],         'infinite'       => true,         'adaptiveHeight' => false,         'draggable'      => true,         'responsive'     => array(             array(                 'breakpoint' => 1024,                 'settings'   => array(                     'slidesToShow' => 4,                 ),             ),             array(                 'breakpoint' => 600,                 'settings'   => array(                     'slidesToShow' => 4,                 ),             ),             array(                 'breakpoint' => 480,                 'settings'   => array(                     'slidesToShow' => 4,                 ),             ),         ),     );     return $  carousel; }