Azure Automation runbook to manage snapshot file share

Hello guys,
I created a runbook in powershell that can create daily snapshots for File Share on Storage Account, setting a retention of 3 days. The list of StorageAccounts is written in a JSON file placed in a container accessible directly via REST API with a URL with related SAS (which may change over time).

Inside the JSON file there is this:

[

{

"resourceGroupName": "DefaultResourceGroup",

"storageAccountName": "sastandard",

"fileShareName": "fsnew"

}

]

Then the script should read the JSON file to determine which fileshares to create and manage snapshot retention.

After several attempts I continue to have several errors.

The script is this:

# Set variable with URL and SAS token
$saListUrl = "https://....."

# Get JSON file with Invoke-RestMethod
try {
    $storageAccountsList = Invoke-RestMethod -Uri $saListUrl
} catch {
    Write-Error "Is not possible download the file JSON: $_"
    exit
}

$retentionDays = 7

# Loop file JSON
foreach ($storageAccount in $storageAccountsList) {
    $resourceGroupName = $storageAccount.resourceGroupName
    $storageAccountName = $storageAccount.storageAccountName
    $fileShareName = $storageAccount.fileShareName

    # Create snapshot
    try {
        Write-Host "Creating snapshot File Share: ${fileShareName} for the Storage Account: ${storageAccountName}"
#$snapshot = New-AzStorageShareSnapshot -ResourceGroupName $resourceGroupName -StorageAccountName $storageAccountName -ShareName $fileShareName
    $snapshot = New-AzRmStorageShare -ResourceGroupName $resourceGroupName -StorageAccountName $storageAccountName -ShareName $fileShareName
        Write-Host "Snapshot created with success!"
    } catch {
        Write-Error "Error creating ${fileShareName}: $_"
        continue
    }

    # Get snapshot and manage retention
    try {
        Write-Host "Manage retention for the File Share: ${fileShareName}"
        # Get file share and their all snapshot
        $fileShare = Get-AzRmStorageShare -ResourceGroupName $resourceGroupName -StorageAccountName    $storageAccountName -ShareName $fileShareName -IncludeSnapshot
        $snapshots = $fileShare.Snapshots

        foreach ($snapshot in $snapshots) {
            $snapshotTime = Get-Date $snapshot.SnapshotTime
            if ((Get-Date) - $snapshotTime -gt (New-TimeSpan -Days $retentionDays)) {
                Write-Host "Delete snapshot $snapshotTime for the File Share ${fileShareName}"
                # Delete snapshot
                Remove-AzStorageShare -ResourceGroupName $resourceGroupName -StorageAccountName $storageAccountName -ShareName $fileShareName -SnapshotTime $snapshotTime -Force
                Write-Host "Snapshot deleted!"
            }
        }
    } catch {
        Write-Error "Error creating retention ${fileShareName}: $_"
    }
}

the output error is:

31 | … $snapshot = New-AzRmStorageShare -ResourceGroupName $resourceGroupNam …

 |                ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

 | No subscription found in the context.  Please ensure that the

 | credentials you provided are authorized to access an Azure subscription,

 | then run Connect-AzAccount to login.

Write-Error: A parameter cannot be found that matches parameter name 'ResourceGroupName'.

Someone can help me to find a method to manage retention of snapshot filehare ?

thanks