notification creation pop up and update counter

Hello ALL,

I have a requirement that When ever a notification is created as newly it will check if the measurement document for that FL or Equipment is updated in last 2 hrs if no it will give the popup as update counter for that FL or Equipment YES/NO op

i.e it will take to Update counter or an option no update counter

User has to choose either of this

Please tell me the exact user Exit for Notification and how logic can be implemented

Regards

pratap