[sticklord]

Yeah thats actually what i do:

local function UpdateAurasByGuid(dstGUID, spellID, expire, count, srcGUID, duration, texture) -- Shit way
    local _, instance = IsInInstance() 
    local buUnit = instance == "arena" and "arena" or "boss"
 
    if dstGUID == UnitGUID("mouseover") then
        return UpdateAuraByUnit("mouseover", dstGUID);
    else
        for i = 1, 5 do
            if dstGUID == UnitGUID(buUnit..i) then
                return UpdateAuraByUnit(buUnit..i, dstGUID);
            end
        end
    end
    -- No match, lets try some more
    local plate = ns.GetNameplateByGuid(dstGUID)
    if not plate then return; end
    -- We have the plate at least
    UpdateAuraButton(plate, spellID, texture, count, duration, expire, true)
end