How can I override the default value of some attribute present in gatling.conf by scala/java code?

val confGatling = ConfigFactory.load(“gatling”)

println(conf.getString(“gatling.core.runDescription”)) //Is there any method to set the value

Currently, I have to manually edit the value in gatling.conf file itself. PFA the screen

Please advise.

That’s not possible. It’s too late and config has already been resolved.