IFTTT with two values

Hello,

I have an autoamtization that works great:
I call an IFTTT URL, which then calls a webhook on my HA. My HA starts an automation that announces the “value1” on my echo.
This currently looks like this:

URL:

https://maker.ifttt.com/trigger/Einsatz/with/key/abcdefgabcdefg?value1=Test

IFTTT:

    Method: POST
    Content Type: application/json
    Body: {„event“:“value1“}

HA:

service: notify.alexa_media
data:
  data:
    type: tts
  target:
    - media_player.echo_esszimmer
  message: >-
    {{ trigger.json.event }} 

Now I want to add a second parameter (value2). I have made the following changes. Unfortunately it does not work like this:

URL:

https://maker.ifttt.com/trigger/Einsatz/with/key/abcdefgabcdefg?value1=Test&value2=Test2

IFTTT:

    Method: POST
    Content Type: application/json
    Body: {„event“:“value1“,"state":"value2"}

HA:

service: notify.alexa_media
data:
  data:
    type: tts
  target:
    - media_player.echo_esszimmer
  message: >-
    {{ trigger.json.event }}{{ trigger.json.state }} 

Where is my mistake?