Allow user access to issue based on field value

[Sam Talkers]

I would like a specific user to access a JIRA and be notified any time a specific field within JIRA contains a certain value (as a drop down list). 

Is this possible to do with the built in issue security functions or will I need script runner? Might this be possible to do with security levels? Please explain what I would need to do in the simplest manner possible.

[Nic Brough -Adaptavist-]

It is what security levels are for - the "level" field is a simple drop-down.  You set it to a value, and that value tells you who can see the issue (they still need project rights too - but it narrows it down to issue level)

[Sam Talkers]

Yes, but what if I don't want the user to select it and to set it in the background based on another field? Is there a good way to do this?

[Nic Brough -Adaptavist-]

You'd want a bit of coding or automation that would look at values set and set a "level" automatically.  Bear in mind that you would also want to avoid setting a level a user cannot see, as that looks really odd.