Puppet grant ftp access to user in IIS

gistfile1.pp

 exec { "Grant FTP Access to ${username}": # Grant access to our user
        command => "C:\Windows\System32\inetsrv\appcmd.exe set config \"${site_name}\" /section:system.ftpServer/security/authorization /+\"[accessType='Allow',users='${username}',permissions='Read, Write']\" /commit:apphost",
        unless => "cmd.exe /c C:\Windows\System32\inetsrv\appcmd.exe list config \"${site_name}\" /section:system.ftpServer/security/authorization | find \"${username}\"",
        path => $::path,
        require => [ User[$username], Iis_vdir["${site_name}/"] ],
    }