spawning at certain percentage of health

[lanileb]

I was wondering if it would be possible to write a sub EVENT_SPAWN or sub EVENT_ATTACK script for a mob to make him spawn certain things when his health gets to a certain %. Like when he reaches 70% have him spawn 10-15 little mini versions that the people have to kill, then 40% maybe he takes on another form, stuff like that. And if it's possible to do this, anyone know the commands you would write? I've written some quests before but not sure how you would do a health check.