WooCommerce - Change number of displayed upsells on product pages

functions.php

add_filter( 'woocommerce_upsell_display_args', 'custom_woocommerce_upsell_display_args' );

function custom_woocommerce_upsell_display_args( $args ) {
  $args['posts_per_page'] = 5; // Change this number
  $args['columns']        = 5; // This is the number shown per row.
  return $args;
}

Mike, I'm trying to change the Cross Sell display. I can't hook it and I can't find anything anywhere that can make this happen.

I've tried yours above by changing the filter to cross_sells and I've tried

 `
     add_filter( 'woocommerce_cross_sells_total', 'shopkeeper_change_cross_sells_product_no' );
             function shopkeeper_change_cross_sells_product_no( $columns ) {
       return 6;
    }
`

Nothing has worked. What am I missing? Thanks