value2Succes possible conversion functions from Int to ?{def flatMap?}


This has nothing to do with Gatling or Scala version.

You’re trying to use Scala’s for comprehension so you should probably try to read some tutorials first, eg
For comprehensions iterate over containers of the same type with the “<-” operator.

You have to switch the 2 lines in your for comprehension block and use an “=” instead of a <- for the (new) second line as you don’t want to iterate over an Int.