Template concatenation error

Configuration
1

Now I think I am doing the same, but it is not accepted. Can you shine a light on this?

service: number.set_value
data: value:"{{ states('input_number.warmtevraag') |float * 5 + 50 |int(0) }}"
target:
  entity_id: number.centrale_verwarming_temperatuur

The error I get in the trace is

Error rendering data template: TypeError: can only concatenate str (not “int”) to str

2

Your indentation is wrong and you are only converting the number 50 to an int. Try this

service: number.set_value
data: 
  value:"{{ (states('input_number.warmtevraag') |float(0) * 5 + 50) |int(0) }}"
target:
  entity_id: number.centrale_verwarming_temperatuur
1 Like
3

Thanks. However, I get a new error:

Error rendering data template: Result is not a Dictionary

Could there be a problem in the definition of the number?

number:
- platform: mqtt
  name: "Centrale verwarming temperatuur"
  state_topic: "K2/CH/temperature"
  command_topic: "K2/CH/temperature/set"
  min: 20
  max: 80
  icon: mdi:radiator
4

I changed the automation to this, which is accepted, but doesn’t change number.centrale_verwarming_temperatuur in the end. aaargh. I really appreciate some guidance here.

service: number.set_value
data:
  value: '{{ (states(''input_number.warmtevraag'') |float(1) * 5 + 50) |int(0) }}'
entity_id: number.centrale_verwarming_temperatuur

(btw the changes in quoting are done by HAss.)

5

Don’t worry about the quotes, the GUI editor does that. It’s ok.

I missed a space in my config. Try this:

service: number.set_value
data: 
  value: '{{ (states(''input_number.warmtevraag'') |float(0) * 5 + 50) |int(0) }}'
target:
  entity_id: number.centrale_verwarming_temperatuur
6

Thanks Tom. Unfortunately this doesn’t change a thing. Code runs fine, trace shows no errors, but the value doesn’t change:

Trace:

Executed: 9 februari 2022 17:25:55
Result:

params:
  domain: number
  service: set_value
  service_data:
    value: 53
    entity_id:
      - number.centrale_verwarming_temperatuur
  target:
    entity_id:
      - number.centrale_verwarming_temperatuur
running_script: false
limit: 10

In Template tool:

{{ (states(“input_number.warmtevraag”) |float(0) * 5 + 50) |int(0) }}
{{ states(‘number.centrale_verwarming_temperatuur’) }}

Result:

53
0

:thinking:

7
  1. Go to Developer Tools > Services and select Number: Set
  2. Select your entity: number.centrale_verwarming_temperatuur
  3. Enable the Value option and enter 53
  4. Click the Call Service button.
  5. Go to Developer Tools > States
  6. Find number.centrale_verwarming_temperatuur and confirm its state value is now 53

If it’s not 53 then that issue has to be solved first.

1 Like
8

Thanks @123 and @tom_l

Tom’s suggestion was wordking already. My arduino simply wasn’t responding to the mqtt request:

K2/CH/temperature/set 53

Should be responded with

K2/CH/temperature 53

Solved!