How to Send an Custom Alert Notification to the User Who Created a Position.

I have configured a Custom Alert for Position Creation. My requirement is to send the alert notification only to the user who created the position.

Initially, I tried using a BIP notification. However, since the Position Code is generated automatically during the position creation process, I was unable to include the Position Code in the notification content .

As an alternative, I created a Custom Alert so that I can include position details, including the Position Code, in the notification. The remaining challenge is identifying and setting the recipient as the user who originally created the position.

Has anyone implemented a similar requirement? Is there a way to use the Created By user as the recipient in a Custom Alert, and if so, what recipient expression or configuration should be used?