HTTP .status not working

i am getting an error 403 when i am not passing client id and secret. This is an exception scenario where i should be sending some headers in the response.So i had set an property y http.status as 403 ans passed the headers . But i dint see the headers in the response. Actually when am trying to hit the API it is giving me 403 and body as missing client id and secret but i have set payload different in my property .