Response Format - Delivery mechanism seems off

I am running the Gemini Interaction API from Unity (C#). Images is where I want to start. I am building the JSON myself. On an image generation request there is a response format field. Most of the members of Response Format work fine but not the Delivery enum. I get an error if I provide “uri” or “inline” . {“error”:{“message”:“Image delivery mode is not supported.”,“code”:“invalid_request”}}]. If I don’t provide it will send it back - inline which is not what I want. Sorry if this is in the wrong section.

I really like the idea of the Interaction Api. The idea of a Unified approach for models and agents makes perfect sense but I may be here too early. I think, I should consider moving back to the generateContent API because it seemed to work just fine.

This is a Unity Editor Window for Generating Textures then convert (if necessary) to sprites or materials. Just an FYI.