Pulling attribute from event sensor not working

Configuration
1

Hey Guys,

so my problem is, that if I try to read one, or even two attributes “deep” into the dict, then it works. But as soon as I read the second one, the output changes from dict to list, I can’t read any more attributes:

{{state_attr('event.change', 'new')}}

This works fine and gives back a dictionary:

{
  "start": 
  "end": 
  "id": 967799,
  "lsnumber": 239000,
  "code": "cancelled",
  "type": "ls",
  "subjects": [
    {
      "name": "xyz",
      "long_name": "xy"
    }
  ],
  "rooms": [

[...]

But now, the code suddenly gives back a list:

{{state_attr(event.change', 'new_lesson')["subjects"] }}

[
  {
    "name": "xyz",
    "long_name": "xy",
  }
]

Now, something like

{{state_attr('event.change', 'new')["subjects"]["name"]}}

doesn’t work, and I get the error message: “‘list object’ has no attribute ‘name’”
What am I doing wrong here, and could I read out the attribute?
So my goal is to just get “xyz” as an output.
Thanks in advance

2

You can use index to select the first item from the list like:

{{ state_attr('event.change', 'new')['subjects'][0]['name'] }}
3

Thanks, worked immediately!