Hi,

I had issues getting the code in this thread to work (even with the new random user created).
I kept getting '400 Bad Request' errors.

Eventually I got it to work by adding a couple of extra headers:

Host: [Bridge IP Address]
Content-Type: text/html

It seems that the latest bridge firmware may be stricter on what you must send.

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For a TOGGLE, you could send a GET to /api/[UserID]/lights/[LightNumber]
It will return the current settings for that light in JSON format
Parse that to see if on is true or false
Then send a PUT command with the opposite.