I am trying to create a WebApp item and assign it to a category. This is the request body I am using: 

{

 "name": "test",

 "slug": "test",

 "enabled": "true",

 "webapp_field_5_1": "",

 "category": "23"

}

I have also tried using the category name, but that does not work. 

Is it possible to set the category for a new WebApp item using the API?