New to LUA, need some help please.

[C-Death]

Hello, I am looking for something that is probably really simple in LUA, but I can't seem to find it. I am scripting a boss named Captain Tick, the problem is, I can't find an 'event' (Like EnterCombat) that is when his health drops below 20%. Thanks for the help :wave:

[BrantX]

You mean like

function Cap_Low(pUnit,Event)
 if pUnit:GetHealthPct() < 19
	pUnit:SendChatMessage(14, 0, "I yell at 19% of HP!")
end
end

RegisterUnitEvent (NPCID, 1, "Cap_Low")