So agent goes to the queue and opens up an existing request. The request has numerous fields and the agent updates a custom field (dropdown box), immediately a pop-up screen appears asking if the agent wants to updates the custom field as the security level of the request will change after updating this custom field. I am not sure if this is achievable using ScriptRunner :
i. Check a custom field is updated.
ii. Shows a pop-up screen to confirm the changes on the custom field
iii. If user confirm changes, update the security level of the request