WoWInterface - Chaman 60 maelstrom alert

Hi everyone, my lua knowledge is pretty poor so I request your help to make an addon that play a sound when my chaman has 60 maelstrom points so I know when to use some abilities without constantly watching at my bars (because when I watch my bars I dont see what's happening on the field and then take damages or die...). Thanks in advance.

I found the following code in the addon named "ComboWhore" (for rogues) if that can help create something.

Lua Code:

local f = CreateFrame("Frame")
f:RegisterEvent("UNIT_POWER_UPDATE")
 
local SoundPath = "Interface\\AddOns\\ComboWhore\\Sounds\\"
local comboPoints = 0
local SoundPlayed = false
 
f:SetScript("OnEvent", function(self, event, ...)
    comboPoints = GetComboPoints("player", "target")
    if(comboPoints == 5 and SoundPlayed == false) then
        PlaySoundFile(SoundPath .. "FinishSound.ogg", "Master")
        SoundPlayed = true
    elseif(comboPoints <= 4) then
        SoundPlayed = false
    end
end)