Unattended install of SQL Server

Hi,

Is it possible to declare a variable for an instance or username for example and pass it to a setup.exe command to run a silent install?

for example below (which obviolsy fail)

Set INSTANCENAME='host1'

setup.exe /QUIETSIMPLE /ACTION=install /FEATURES=SQL TOOLS /IAcceptSQLServerLicenseTerms=true /INSTANCENAME=="NAME"/SQLSVCACCOUNT="NT AUTHORITY\Network Service" /SQLSYSADMINACCOUNTS="domain\username" /AGTSVCACCOUNT="NT AUTHORITY\Network Service"

Thanks,