Session-ID number when the event occurs: "ACCESS_SESSION_CLOSED" (APM)

Number of session when closing event occurs in the ACCESS_SESSION_CLOSED

 

Hello, we have created one irule to collect the session number when the user closed the session properly, using the event ACCESS_SESSION_CLOSED.

 

But when it happens, not return the session ID. This variable is return empty.

 

This appears in the F5 documentation: ACCESS_SESSION_CLOSED This event occurs when a user session is removed. This can occur because a user logs out, because the user session times out due to inactivity, or because the user session is terminated by an administrator. You can use the ACCESS::session command to get session variables in this event

 

Do you know how to get the session ID in the correct closed?... Thank you