Secondary Sidebar placed after the content

OK, I found how to set the secondary sidebar (sidebar-alt) after the content:

add_action( 'genesis_after_entry', 'after_entry_widget', 5  );
function after_entry_widget() {

    genesis_widget_area( 'sidebar-alt', array(
		'before' => '<div class="after-entry widget-area"><div class="wrap">',
		'after'  => '</div></div>',
    ) );

}

But… the sidebar is NOT replaced by the sidebar I choose in the post or page using this plugin.

Isn’t the plugin replacing the sidebar-alt?

Thanks