Can you deploy nodejs functions to different regions on Vercel?

Does anyone here know if it is possible to deploy nodejs functions to different regions on Vercel? (In the same project) I've this read this help doc that seems to suggest it is https://vercel.com/docs/functions/configuring-functions/region#project-configuration But if I add regions array to my vercel.json the build fails

Configuring Regions for Vercel Functions

Learn how to configure regions for Vercel Functions.

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