[201-vmss-automation-dsc] - Given powershell script fails

I have noticed poweshell script example provided passes template parameter files and dynamic variables which are used in template.

`
$RegistrationInfo = Get-AzureRmAutomationRegistrationInfo -ResourceGroupName $ResourceGroupName -AutomationAccountName $AccountName

New-AzureRmResourceGroupDeployment -Name TestDeployment -ResourceGroupName $ResourceGroupName -TemplateFile .\azuredeploy.json -TemplateParameterFile .\azuredeploy.parameters.json -registrationKey ($RegistrationInfo.PrimaryKey | ConvertTo-SecureString -AsPlainText -Force) -registrationUrl $RegistrationInfo.Endpoint -automationAccountName $AccountName -jobId (New-GUID) -adminUsername $credential.UserName -adminPassword $credential.Password -domainNameLabel $DomainNameLabel -Verbose
`

For some reason it throws an error when i try to run same through powershell ISE and get error saying registrationKey is not valid parameter.

Is there something I need to install before I run this script?

Start with the PowerShell ISE command using azuredeploy.json and azuredeploy.parameters.json, then check the available parameters for New-AzureRmResourceGroupDeployment and the AzureRm Automation registration cmdlets. Reproduce the registrationKey error and document the required module or version, or update the example so the deployment invocation is valid.

Written by the indexing model from the issue text.