Thanks for replying. Your help is very greatly appreciated.
I don’t know how to go about creating a channel and a brief hunt for further explanation was unfruitful. I did look into the REST interface further and found this post.
A little bit of modification and my code becomes;
rule "Change dimmer settings when night mode set"
when
Item HouseMode changed to night
then
sendHttpPutRequest("http://localhost:8080/rest/things/zwave:device:46feb3ec:node3/config", "application/json", "{'config_19_1':1}")
end
which has the desired effect.
I assume the _1 at the end of config_19_1 is the number of bytes in the parameter. Is this correct?
Also, are you able to point me towards some information about creating a channel and what is involved in this? I am very keen to extend my knowledge of openHAB as much as possible and this looks interesting.