can't set a dynamic json key

I tried this:

let url = "http://example.com";

let x= Json{
  "{url}": "valid"
};

log("{Json.stringify(x)}");

This happened:

{"{url}":"valid"}

the key isn't set correctly to the value of url

I expected this:

No response

Is there a workaround?

No response

Anything else?

No response

Wing Version

No response

Node.js Version

No response

Platform(s)

No response

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