EDIT:
[...]
ToonGetInfo

-- Handle json
--local json = assert(loadfile "C:\\Program Files (x86)\\Domoticz\\scripts\\lua\\json.lua")() -- For Windows
local json = assert(loadfile "/home/maes/domoticz/scripts/lua/JSON.lua")() -- For Linux


Okay, next step - I hope.
I have Domoticz installed ...

Well thanks for trying, that's swift though short.
However, now I found in the long list of types the Dummy.
After the dummy is created I can choose switchtype.
Getting there slowly, I think.

Hi Maes and others,
I new to Domoticz, but I was glad to find it and especially this topic, hoping to control my Toon.
I've been reading through this topic and ik seems very nice (thanks for all the work!).

However, in the first step of your manual I got lost already. Variables are created. But ...