how to write the outside temperature on vaillant ?

[ilie]

Hey there,

does anyone have succeded in writing the outside temperature in an vaillant heater?

my heater is:
2020-04-18 00:52:15.868 [update notice] sent scan-read scan.08  QQ=31: Vaillant;BAI00;0609;5502
with config file :bai.308523.inc

I have tried to write the outsidetemp parameter with sthis commands:
31feb51603014009 = 2: broadcast outsidetemp

ebusctl hex feb51603014009
ebusctl hex feb51603010006
ebusctl hex 08b505021c09
sudo ebusctl hex feb50401000a0301020304050502204009

when I broadcast the value i get the feedback like :
done broadcast
or
00

but when read back the OutdoorstempSensor I get this result:
--60.44;cutoff
or

--bai OutdoorstempSensor temp=-60.44 °C [Outside temperature (uncorrected value)];sensor=cutoff [sensor status]

can somebedy help me with an write command example or see what I am doing wrong in my broadcast command?

Thank you in advance,
Ilie