my setup exit code is 0 but not finish succesfully (sql express 2008 r2)

my package :
<Commands Reboot="Immediate">     <!-- Defines a new installation (x86) -->     <Command PackageFile="SQLEXPR32_x86_ENU.EXE"                  Arguments='/q /hideconsole /action=Install /features=SQL /instancename=SQLEXPRESSR2 /enableranu=1 /TCPENABLED=1 /IAcceptSQLServerLicenseTerms /sqlsvcaccount="NT Authority\Network Service" /AddCurrentUserAsSqlAdmin /skiprules=RebootRequiredCheck'                  EstimatedInstalledBytes="225000000"                  EstimatedInstallSeconds="420">       <InstallConditions>         <BypassIf Property="Sql_Express_2008R2_Version" Com ...