Silent Installing Sage MAS 500 2014

I am having problems creating a batch file for silent installing the Sage MAS 500 Desktop client. I did follow the instructions that was provided. And was using this command  in an elevated command console "Setup.exe INSTALLDIR="D:\Program Files\Sage Software\Sage MAS 500 Client" SERVERNAME=MyServerName APPFILENAME=MyFileName STARTUPOPTION=0 /qn". Just goes automatically to the installation wizard asking where I want to save the files.