Health Monitor is creating a new session id on the application

We have a test jsp page which is setup as a health monitor on the application to check the status of the instances on the F5. This health monitor is causing the application to create a new session everytime and its not expiring the session.

not sure if i understand correctly but application is the one who creates session when getting request from f5's health monitor, isn't it? so, how can irule address this issue?

am i lost?