RevScripts onKill event

[darkmu]

I'm a little rusty, can anyone help me improve this code? What is happening is that if the second onwards kills the monster he is inserting it several times in the table, and I need to block to insert only once.

function killMonsterHunter.onKill(creature, target)
    local monster = Monster(target)

    if not monster:isMonster() or monster:getMaster() or monster:isPlayer() then
        return true
    end   
    
    for pid, p in pairs(monster:getDamageMap()) do   
        
        local creature = Creature(pid)
        if creature then               
            local player = Player(creature)
            
            if player then           
                local position = target:getPosition()
                if target:getName():lower() == 'rat' then                   
                    if #MonsterHunter > 0 then                       
                        for i = 1, #MonsterHunter do   
                            
                            if MonsterHunter[i].id ~= player:getGuid() then   
                                local tableProperty = {
                                    id = player:getGuid(),
                                    name = player:getName(),
                                    kills = 0
                                    }
                                table.insert(MonsterHunter, tableProperty)
                            else                               
                                local killerTeam = MonsterHunter[i]
                                killerTeam.kills = killerTeam.kills + 1                                   
                            end                           
                        end
                    else
                        local tableProperty = {
                                id = player:getGuid(),
                                name = player:getName(),
                                kills = 0
                            }
                        table.insert(MonsterHunter, tableProperty)   
                    end                   
                    Game.createMonster('Rat', position, true, true)
                end
            end
        end
    end
    return true
end