UnitBuff stacking?

[killc0unt]

so im new to lua and i have been trying to make a macro for my shadow priest but for my rotation but i want it to start with 2 mind spikes then a mind blast, making the mind melt buff stack twice so mind blast is an instant cast but i have tried everything i can think of and i couldnt get it to work. i have tried giving unitbuff() a number and unitaura but i tried to get the count and i couldnt find it or just something didnt work, i used something like

/run local MM=(UnitAura("Player","Mind Melt","Count")) if MM==2 then CastSpellByName("Mind Blast") else end;

also a noob question, i have seen scripts with n,_,_,_, then something like what im trying to do and im guessing the "n" means name but im not exactly clear on what it does. Thanks in advance for any help.

[Ultraviolence]

Here's some examples (traditional format for clarity... edit for in-game usage):

local name, rank, icon, count, debuffType, duration, expirationTime, unitCaster, isStealable, shouldConsolidate, spellId
if UnitBuff("player","Mind Melt") and count==2 then
	CastSpellByName("Mind Blast")
end

If you aren't going to utilize all returns within a function (if you needed to save space in a macro, for example) you can use something like local name,_,_,count,_,_,_,UnitCaster, and so on.

Or, a more simplistic/tidy method:

local mm={UnitBuff("player","Mind Melt")}
if UnitBuff("player","Mind Melt") and mm[4]==2 then
	CastSpellByName("Mind Blast")
end

Where [4] is the fourth result from the UnitBuff function (which happens to be count). And you can add other things like mm[7]-GetTime()<=2 (where [7] refers to expirationTime) to use Mind Blast with less than or equal to 2 seconds left of the Mind Melt buff, which is probably not even a good idea to do in this case, but I'm just giving another example.

Good luck.

[killc0unt]

awesome, thanks for the help