trouble to remove table due to ACCESS_SESSION_CLOSED event

Hi all,

I want to remove a table after clicking the EdgeClient disconnect button:

when ACCESS_SESSION_CLOSED { 
    table delete -subtable TableName -all
}

If I use another browser session with an iRule that does check this table:

when HTTP_REQUEST {
    log local0. [table keys -subtable TableName]
}

I still get all the content from this table. This looks not normal to me because I deleted this table before with the ACCESS_SESSION_CLOSED event. Does somebody know why that happens?

Thank you, sm