Gatling with JSF and post request


I have problem with my application which is using JSF and I am trying to use Gatling for load testing it.
I have a simple Gatling code which do a login (submit a form with post req.) and then a search (submit form with post req.) and then tries to submit a new form (post req.)
which suppose to create some data in a DB.
The Gatling runs without any error and I get fine result but when I check the DB I does not see any new information base on the last submitted form.
I tried to debug my application while i was running Gatling testes and put some breakpoints in corresponding functions but I does not trigger any of the functions which is called in the backend after submit.
I am using Gatling v.2.3.1
Any ideas or tips please?