REST receiver adapter parsing error

I have a synchronous scenario PROXY to REST.
Here I have 3 methods with all different responses which are defined in the Response Determination tab in the iFlow.

What I want is that the http_status and http_status_text are always returned to the PROXY in some field in each of these methods.

I have created fields for this in the message types but am unable to retrieve the status and statustext. How can I accomplish this?