Sending DDoS Alerts into Sentinel and Analytic Rule Error

I am attempting to activate a Sentinel analytic rule for DDoS incidents, specifically the rule named “DDoS Attack IP Addresses - Percent Threshold.” 

However, during the rule activation process, I encountered an error message indicating that the scalar expression ‘destPublicIpAddress_s’ could not be resolved.

It appears that the Azure Diagnostic table does not contain a column named ‘destPublicIpAddress_s.’

I have configured the public IP address to send logs to LA

Is there anything I can do to receive DDoS alerts into Sentinel?

or to resolve analytic rules error?

The query referenced is here

let T1 = AzureDiagnostics
| where ResourceType == "PUBLICIPADDRESSES" and Category == "DDoSMitigationFlowLogs"
| summarize rows_count = count() by destPublicIpAddress_s, sourcePublicIpAddress_s;