Add EventGridSystemTopicEventSubscription with deadletter not working

[nulllogicone]

Description

I want to create an event subscription for a FunctionApp on a SystemTopic but can not find how to define the DeadletterEndpoint. My pipeline has Az module v12.5.0 installed.

The following code is working but how can I define the storage account container for deadletter?

$funcid = "/subscriptions/$funcSubID/resourceGroups/$func_rg/providers/Microsoft.Web/sites/$funcapp/functions/$func_name" $func_evdo = New-AzEventGridAzureFunctionEventSubscriptionDestinationObject -ResourceId $funcid

New-AzEventGridSystemTopicEventSubscription -ResourceGroupName $resourceGroupName `       
   -eventSubscriptionName $eventSubscriptionName `         
   -systemTopicName $systemTopicName `         
   -destination $func_evdo

I searched this documentation but couldn't find something about DeadletterEndpoint or destination: https://learn.microsoft.com/en-us/powershell/module/az.eventgrid/new-azeventgridsystemtopiceventsubscription?view=azps-12.5.0

Script or Debug output

The parameter cannot be found that matches name - I tried DeadletterEndpoint or DeadletterDestination

Environment data

PSVersion: 7.4.6

Module versions

Az.Accounts: 4.0.0
Az.EventGrid: 2.1.0

Error output

[microsoft-github-policy-service]

Thanks for the feedback! We are routing this to the appropriate team for follow-up. cc @jfggdl.

[microsoft-github-policy-service]

Thanks for the feedback! We are routing this to the appropriate team for follow-up. cc @jfggdl.