Current month peak 3 always "unknown"

[longer83]

Version of the custom_component

2023.6.0

Configuration

Kamstrup Omnipower (DK-8660)
Pow-K+ (amsleser.no, 2.2.21)
MQTT payload (HomeAssistant)
Mosquitto broker (6.2.1)
AmsHan addon (2023.6.0)

Describe the bug

Current month peak 3 always "unknown" despite tariff peaks display correct values.

Debug log

name: Current month peak 3
state_topic: amsleser/realtime
unique_id: ams-xxxx_peaks3
object_id: ams-xxxx_peaks3
unit_of_measurement: kWh
value_template: '{{ value_json.peaks[3] | is_defined }}'
device:
  identifiers:
    - ams-xxxx
  name: AMS reader
  model: Pow-K+
  sw_version: v2.2.21
  manufacturer: amsleser.no
  configuration_url: http://ams-xxxx.local/
device_class: energy
platform: mqtt

Received 15:43:32
QoS: 0
Payload: max: 3
peaks:
  - 3.57
  - 2.45
  - 3.06
threshold: 5
hour:
  use: 1.38
  cost: 0
  produced: 0
  income: 0
day:
  use: 21.9
  cost: 0
  produced: 0
  income: 0
month:
  use: 63.5
  cost: 0
  produced: 0
  income: 

[jeriks31]

Looks like the index is wrong here value_json.peaks[3]
It should be 2 for the third peak (0,1,2 not 1,2,3)