Incorporating GD Ratings System synced meta data into W4 Post Lists

Hello! I utilize GD Rating System to allow users to rate posts on Creepypasta.com. The plugin offers a “sync” feature which sends the average scores and total numbers of votes for each post to a table in cPanel called: wp_gdrts_itemmeta

Within this table, there are meta keys such as “stars-rating_rating” and “stars-rating_votes” which I would like to incorporate into my W4 Post Lists to display these values.

However, incorporating this code into my lists doesn’t work: [post_meta value=”stars-rating_rating” multiple=”0″]

I have also tried: [post_meta value=”_gdrts_stars-rating_rating” multiple=”0″] (at the request of the developer of the rating system, and this doesn’t work either)

My question is, does this “post_meta value” script only work to pull info form Advanced Custom Fields created fields, or can it be used to pull data from other tables such as the GD Rating System as well? And if it can be done, how can I achieve this?

Thank you for your help!