LangGraph Studio: Conext Schema and Visual Editor

Hello, I have my graph loaded with the LG Server and LG Studio in my browser.

My Graph requires a context scheme (a pydantic obj GraphContext).
I see an option to change the raw json for the state scheme, but not for the context.

I have also tried:
{

    "messages": {

        "content": "Hello"

    }

},

context=GraphContext(model_name="openai")

)

or however the raw json was before studio DELETED it. Anyway would you help me answer that question?

Second question is I got the studio working so I could use the drag and drop visual graph builder I see advertised in articles. Would you please help me figure out how to enable or use that? I only see my simple graph in the view, and I can drag the view around but not add or drag elements.

Thank you very much for your help.