Interrupt PVP Earth Shock

I need an interrupt script for my resto shaman. Something simple like interrupting a set target focus with Earth Shock. I tried some things but couldn't get anything to work. If anyone can help or give some guidance I would be grateful. Also, what profile should I then load into Wrobot itself? I also ask ChatGTP for lua but dont think this is correct if some u guys can check it for me rly quick !

local interruptSpells = {
    ["Healing Touch"] = true,
    ["Tranquility"] = true,
    ["Regrowth"] = true,
    ["Cyclone"] = true,
    ["Frostbolt"] = true,
    ["Polymorph"] = true,
    ["Howl of Terror"] = true,
    ["Fear"] = true,
    ["Drain Life"] = true,
    ["Holy Light"] = true,
    ["Flash of Light"] = true,
    ["Greater Heal"] = true,
    ["Flash Heal"] = true,
    ["Mind Blast"] = true,
    ["Smite"] = true,
    ["Lesser Healing Wave"] = true
}

local frame = CreateFrame("Frame")
frame:SetScript("OnUpdate", function()
    local name, _, _, startTimeMS, endTimeMS, _, _, notInterruptible = UnitCastingInfo("focus")
    
    if name and interruptSpells[name] and not notInterruptible then
        local currentTime = GetTime() * 1000
        local castProgress = (currentTime - startTimeMS) / (endTimeMS - startTimeMS) * 100

        if castProgress >= 5 and castProgress <= 10 then
            CastSpellByName("Earth Shock", "focus")
            print("Interrupted " .. name .. " with Earth Shock at " .. math.floor(castProgress) .. "% cast progress.")
        end
    end
end)