help with LUA

[controlsx2]

Well there are some parts i dont get like when you register events within events like

function SunwellPriest(unit, event, miscunit, misc)
print "SunwellPriest"
unit:RegisterEvent("SunwellPriest_Mind_Flay",1000,0)
unit:RegisterEvent("SunwellPriest_Vampiric_Touch",950,0)
unit:RegisterEvent("SunwellPriest_Shadow_Word",1100,0)
unit:RegisterEvent("SunwellPriest_Min_ Blast",1150,0)
end

Whats the numbers for after it like the 1000,0 for?

[Szharz]

i think its the cooldown time oO?

[Gastricpenguin]

Lets take one and explain. This for example:
unit:RegisterEvent("SunwellPriest_Mind_Flay",1000,0)

Every 1 second (1000 miliseconds), the function "SunwellPriest_Mind_Flay" will be called upon. So if "SunwellPriest_Mind_Flay" activates a spell, this mob will cast that spell every second.

[controlsx2]

Thanks so much guys!