Creating a new Label?

[danielps]

I need to create a label that excecute when a mob stop chasing a player (or another mob - it may happen in my event).

Like there is a label OnNPCKillEvent that excecute  when a mob die. So... when a mob start chasing a player, imagine a maya chasing a novice, he will run for his life of course.. but, what it he can run and live. Maya will stopp chasing him cause he's too far, right? In that momment i want my label to excecute!

Any idea? Any help?

Thanks!