Trying to check status, when status comes from the feed

Hi All.

In gatling 2.2.0.

here is my code:

I have a ssv feeder where one of the fields is called HTTPRC and contains expected response code for a service.

I tried:

.check( => s("HTTPRC").validate[Int]))


among other things. 

Nothing works. Can some one please point out where my stupidity lies :) I'm a novice here.