howto pass username/password when launch RumbaPage.exe from command line?

Hello,

According to RumbaPage.exe command line arguments below, there is no way to pass username/password from command line:

RumbaPage.exe <path>\<session_desktop_profile> /Display:MFrame /Host:<IP_or_host_name> /Port:<port_number> /forcenewinstance

If it is possible to pass username/password with a Rumba Script kind of things or Windows SendKeys injection

Our purpose is to inject username and password when launch AS400 display with RumbaPage.exe so the user can automatically login to a session.

We use Rumba Desktop V10.1 trial version

Thanks,

Alex