We now natively support GNUbg IDs in the site's custom position rendering scripts.
To use, just paste your GNUbg ID (e.g., jM/gDQDYzeAJIA:EQFvAAAAAAAA) inside of a <div data-theme-position></div> tag (included in position post template for easy reference)!
For more detailed instructions see the About the Position Analysis & Discussion category topic. If you are still having issue, feel free to post in the Site Questions & Feedback.