Gatling: Get REST resource, change JSON, Post back

The same question as here:
http://stackoverflow.com/questions/25011052/gatling-get-rest-resource-change-json-leaf-post-back

I am wondering whether something changed or not since 2014?

No.

Could you please point me to an example of how to handle this:

.check(jsonPath("$.result").ofType[Map[String,Any]].find.saveAs(“result”)

in order to place the above JSON here:

.body( ??? )