Log Out after installation - Qt Installer Framework

[Noturnoz]

I would like to ask if it is possible to create a "Log Out" option at the end of the installer (Qt IF) on Mac OS X. I tried to at this to the config.xml file but nothing happens:

<RunProgram>osascript</RunProgram>
<RunProgramArguments>
    <Argument>-e</Argument>
    <Argument>'tell app "System Events" to log out'</Argument>
</RunProgramArguments>
<RunProgramDescription>Log out</RunProgramDescription>

This is in the installer's log file:

[13066] Warning: QString::arg: Argument missing: Log out, Client Based Spooler (:0, )
[18420] starting "osascript" ("-e", "'tell app "System Events" to log out'")