How to fetch custom variables in rankmath schema pro?

Hello,

Thank you so much for getting in touch and bringing your concern to our attention.

You can custom variables by following this guide: https://rankmath.com/kb/variables-in-seo-title-description/#how-to-add-custom-variables

Once you added the function to your website, you can then add the custom variable to the schema fields of our schema generator.

Hope that helps and please do not hesitate to let us know if you need my assistance with anything else.