order posts by title

I’d like to order my posts in alpha order by title. I’ve tried this code inside my shortcode, but it’s not working. What am I doing wrong? Thanks!

order_posts_by=”false” orderby=”title” which_order=”ASC”

BTW, I’ve also tried order_posts_by=”true” with no luck

https://wordpress.org/plugins/custom-post-type-list-shortcode/