Order by doesn't seem to be working

Hi, great plugin, but I’m having trouble getting the sort to work. Can you see anything wrong with my shortcode syntax please?

<?php
echo do_shortcode(‘[ajax_load_more post_type=”post” post_format=”standard” posts_per_page=”‘.get_field(‘num_posts’,’option’).'” category=”events” button_label=”LOAD MORE” max_pages=”99″ post_status=”publish” orderby=”date” order=”DESC”]’); ?>

I want to sort by published date.

Many thanks

Delyth

https://wordpress.org/plugins/ajax-load-more/