changing the state of a switch with the help of the rest api

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Hello,
I am trying to implement the nuimo switch an the neeo remote for my smarthome pimatic system. I need to change the state of a switch but I tried a lot but didn’t figure it out.
Do I need to use this rest api to change the state?

 http://xxxxxx/api/execute-action

And what is the correct syntax because I got always

400 Bad Request

 {
  "success": false,
  "message": "expected param: actionString"
}

But in my implementation I wrote this in the data body

 "actionString":"toggle Binary_Switch_4"
 "logging":"true"
 "simulate":"false"

what is wrong?

I tried it once more and now everything is fine

@temp said in changing the state of a switch with the help of the rest api:

I tried it once more and now everything is fine

The actionString value is an action expression which is the same what is used for the action part of rules. Note, for “execute-action” a POST request is required. See also section “executeAction” at https://pimatic.org/api/actions

curl -X POST --header "Content-Type:application/json" --data '{"actionString": "turn edimax-smartplug off"}' --user "XXXXX:XXXXX" http://localhost/api/execute-action

@mwittig I guess it was an error in the cache why it wasn’t executed. Thanks for your help anyway