Server API group properties creation

I’m trying to create a group property with the server API.
The Swagger doesn’t show the body format for the request.
It just show :
:scream: Could not render r, see the console.

the address should be

What is the body string the server is expecting to create a property?
I try something like that
But i got a eroor 400 bad request.
I have tried many different option but always get a bad request error.

Hi! I noted it to fix it! In the meanwhile, you can check any api action over the console. You can open Chrome developers tools and check the requests done by the console. For example, for creating a property:

Thanks for the tip about the console.
I didn’t thought about it.
So the proper string for property creation named “test” is: