gatling dynamic values through feeder

Hi All,

I am using feeder for getting dynamic values but I found an error: not found: value abcID.
Here is my code:

`
val a = csv(“abcID.csv”).circular
.feed(abcID)
.exec(http(“BODY”)
.post(“https://url.com”)
.body(StringBody("""{“abcID”: ${abcID}}""")))

`

please share an example of csv feeder.

thanks in advance!
Peekay