Lua death count for everyone

[darkmu]

What is happening is that if someone hunts together at a party doing a task it is always counted the last one to kill and not everyone who did some kind of damage, could someone help me as I do this?

local config =  _G["riftTasksConfig"]
local storage = 901000

function onKill(player, target, lastHit) 
    if not player:isPlayer() then
        return false
    end
    
    local startedTasks = player:getRiftStartedTasks()
    
    
    for _, taskId in pairs(startedTasks) do
        local teste = config[taskId]   
    
        if(isMonster(target)) then
            if (isInArray(teste.creatures, string.lower(getCreatureName(target)))) then                       
                player:setStorageValue(storage + taskId, player:getStorageValue(storage + taskId) + 1)
            end
        end
    end
    
    return true
end