How to use google optimize on strapi pages?

Hello everyone,
I just tried to run an A/B test with google optimize, but after saving the changes on the content and preview the changes, they do not get applied.

Does anyone have an idea what is missing?
Thank you,

System Information
  • Strapi Version: v3.6.8
  • Operating System:
  • Database:
  • Node Version: v14.19.1
  • NPM Version:
  • Yarn Version: