set peak arriving users on loadtestrunner via cli

Hi, I'm trying to set a parameter for the "peak arriving users" and the "ramp duration" via command line on loadtestrunner.

I didn't see anything related on the Smartbear documentation (I use ReadyAPI 3.44), but the ReadyAPI can produce the related command, including the parameter

"-u", which I believed that would be the one to set the Peak Arriving Users. I noticed that this parameter does not affect the number of users, therefore I'm on a dead end. Additionally, I haven't found any parameter mentioned on the documentation related to the Ramp Duration.

Does anyone have any idea on how can I alter the number of the peak arriving users and the ramp duration in order to use load test runner?

Thanks in advance.