Stun MVP on 50% hp for 5 seconds.

[Venture]

I wanted mvps on my server to be stunned for 5 seconds when it reach 50% hp or below. (Will only run Once, unless its hp regain above 50% again.)

 

To give players some Grace period/Time.

 

and It will play a certain mp3 song file on the map (To indicate the MVP is weak state).

 

MVP does not teleport in my server, as MVPs can be killed with 1 to 4 people.

 

How do I do this?.