S20+ Can't clean a specific room

[lucasdelgado2022]

Describe the bug
I've been able to use the api to run different commands through python. I can read information, start cleaning, stop cleaning, etc.
Now I want to get more specific, and I would like to make my robot vacuum go clean a specific room.

Acording to issue 1971 #1971, I should be able to achieve that with the siid:2 piid:13 and passing the parameter {"room":[roomid]}. I've tried different ways of passing that information but I always end up getting a user ack timeout error and the vacuum crashes. I don't know if I'm doing something wrong or if it just an issue with the vacuum.

Version information (please complete the following information):

• OS: windows
• python-miio: Version: 0.6.0.dev0
  Device information:
  If the issue is specific to a device [Use miiocli device --ip <ip address> --token <token> info]:
• Model: xiaomi.vacuum.b108gl
• Hardware version: (xiaomi S20+)
• Firmware version: v4.5.6_0208 - "version":"0208","build_time":"20250415.0

To Reproduce
Steps to reproduce the behavior:
This is the code I'm running:

siid=2

aiid=13

params = {"room":[4]}

payload = {

"did": f"call-{siid}-{aiid}",

"siid": siid,

"aiid": aiid,

"in": params

}

result = dev.send("action",payload)

I've also tried:
-using brakets:
"in":[params]
-using json.dumps
-passing just the room id
-passing [4] or [[4]]

It always crashes
Expected behavior
should start cleaning

Console output
If applicable, add console output to help explain your problem.
If the issue is about communication with a specific device, consider including the output using the --debug flag.
{'code': -9999, 'message': 'user ack timeout'}