Hi @Charlie Lenahan , thanks for submitting! This feature is not supported.
If you'd like to request this feature, we use the Microsoft 365 Developer Platform Ideas system to track feature requests. Please check the existing ideas, and submit yours as a new idea if it's not already on the list. If the community upvotes your idea, it's more likely to be added to the add-ins platform.
You can also consult the Stack Overflow community for potential workarounds. Stack Overflow has an active community of developers that regularly provide feedback and guidance.
Cheers,
Alison