|resourceGroupName||The Azure Resource group where the storage account sits|
|connectionName||The Azure Run As connection (service pricipal) that was created when the automation account was created|
|StorageAccountName||The name of the Azure Storage account|
|ContainerName||The blob container name|
|DaysOld||The number of days a blob can be before it is deleted|
Ensure you have access to Azure Active Directory so, on Automation Account creation, Azure creates a RunAs account for you. This will save you a lot of trouble.