Post requestBody not showing/generating

I'm trying to add request body here for my post endpoint, I cannot, I have tried requestBody property and nothing.
As seen in the picture I've been able to add it manually in the json output but not from the yml config file

```yml
endpoints:
createPerson:
summary: Crear personaje
description: Crea un personaje nuevo en la BD.
requestBody:
description: "Body param"
requestModels:
application/json: RequestObject
```

Basically this object is not being generated I have to add it manually for it to work