Problem solved.
Because for some unknown reason I could not set a different value manually in the two temp sensors, I used the following api command:

[url]http://domoticzip:port/json.htm?type=command&param=udevice&idx=IDX&nvalue=0&svalue=TEMP[/url]

replace IDX with device id and TEMP for a value ...

Hi,

I only can make it run if I use as virtual sensor therm setpoint for all three virtual sensors.
My understanding was 1 virtual sensor with therm setpoint and the other two as virtual sensor "temperatuur"
If i do that I get the errors with "the known and here mentioned nil errors"
I'm confused ...

YES :D :D :D

I Fix my problem myself :-)

After you have copieed,changed the scripts and if the scripts are running(with the error i had), then you have to manually update(adjustment) the 2 Temp sensors each with a different value. (because 0 and 0 will be a nil value :-) )

Now i have to changed ...