Found it. That really helps, thnx.
Making the first steps and finding your way is always the hardest of times )

OK, I found the solution, my devices are updated correctly.
Thnx for getting me on track.

The first line of the timer event must be:
commandArray={}

The last line of the code must be:
return commandArray

This is not self-evident for starters in Domoticz / Events coding in the absent of a ...

I modified the code according to your remarks (see new code below) but I keep getting:
2019-05-09 09:18:01.357 Error: EventSystem: in Weather: [string " local domo_ip = "192.168.178.5:8080..."]:15: attempt to get length of global 'commandArray' (a nil value)

And btw: maybe there is an uodate to ...

I have the code below in a timer event (name is Weather) which belongs to weatherstation (but is not in de linked thread). I reduced the code such that all comment and some unwanted code is taken out but I still get the following errors:

2019-05-09 08:19:00.444 Error: EventSystem: in Weather ...