posts-per_page=1 not working

[display-posts id=”324″ posts_per_page=”1″ image_size=”medium” include_excerpt=”true” wrapper=”div”]

Delivers this: http://tangoforge.com/display-posts-test/

The desired post is the 7th on the list.

Thanks for your help! Otherwise working admirably.

https://ww.wp.xz.cn/plugins/display-posts-shortcode/