Problems in installing SQL Express 2008 using Command prompt in silent mode

I am having problems in installing SQL 2008 Express edition through .net application code.
The command that I am using to run set up through Command Prompt is

This is the argument that is passed to the setup.exe which located on local hard drive once the applications makes a check for OS whether that is 64 bit or 32 Bit

/l*v "C:\Application\SERVICES\DeploymentService\ApplicationService.Installer\bin\Debug\sqlexpr32.exe.log" /qb -q /norebootchk /passive reboot=ReallySuppress addlocal=all TARGETDIR="C:\Application3\Service" instancename=GT0407 SQLAUTOSTART=1 DISABLENETWORKPROTOCOLS=2 SECURITYMODE=SQL SAPWD=!JUS@2XQ!

When the system runs the setup it throws an error as
SQL Server Setup has Encountered the following error :
The aregument '/L*V' is formatted incorrectly. The delimiter '=' is missing
Error code 0x84B40006

If you look here: Setup.exec parameters you will not find an argument '/L*V'