Need custom sidebar in archive-artists page

I have a custom archive-artists.php file that I use for custom post type called artists. I want to use a custom widget area that I created in Appearance >. Widgets. I read the post at https://kriesi.at/support/topic/trying-to-echo-custom-sidebar-wiget-in-child-template/ and followed the instructions to add lines in sidebar.php and in my archive artists.php, but it is not working for me.

In sidebar.php

// Artist sidebars
            if ($avia_config['currently_viewing'] == 'archive-artists' && dynamic_sidebar('Artists Mediums') ) : $default_sidebar = false; endif;

I added this just below

 // general pages sidebars
            if ($avia_config['currently_viewing'] == 'page' && dynamic_sidebar('Sidebar Pages') ) : $default_sidebar = false; endif;

Then on my archive-artists.php file I modified the sidebar code:

//get the sidebar
				$avia_config['currently_viewing'] = 'archive-artists';
				get_sidebar();

I also tried using ‘artists’ instead of ‘archive-artists’.

Can I do it this way or do I need to register a sidebar in my functions.php file and create a new sidebar.php?

Thank you!