Alerts - Only include the last incident that meets the exception criteria

Content

Hi,

 

I have created a report that sends an Alert every time a chat goes abandoned. I based it on an exception with the following parameters:

Expression: chats.first_engaged

Operator: Is Null

The Schedule is set to run the report every 15 mins and the report looks back 1 hour.

Is there a way to have the Alert only send the report with the last abandoned chat every time the exception is met, so that it does not include all the abandoned chats within the last hour?

Many thanks

Pavol