$Conn = Get-AutomationConnection -Name AzureRunAsConnection
    Add-AzureRMAccount -ServicePrincipal -Tenant $Conn.TenantID -ApplicationID $Conn.ApplicationID -CertificateThumbprint $Conn.CertificateThumbprint
    
     Set-AzureRmVMExtension  -ResourceGroupName $RgName `
            -ExtensionName "CreateFile"  `
            -VMName $vm.Name `
            -Publisher Microsoft.Compute `
            -ExtensionType CustomScriptExtension `
            -TypeHandlerVersion 1.8 `
            -SettingString '{"commandToExecute":"powershell Add-Content -Path \"C:\\inetpub\\wwwroot\\Default2.htm\" -Value $($env:computername)"}' -Location westeurope