Arrow attack dont miss a lot

[zabuzo]

My arrow script is missing so much shots...
I don't want it, how to fix?

arrow.lua

local function autoRechargeAmmo(cid)
    local ammo_in_slot = getPlayerSlotItem(cid, CONST_SLOT_AMMO).uid
    if ammo_in_slot == 0 then
        return false
    end
    ammo_in_slot = getPlayerSlotItem(cid, CONST_SLOT_AMMO).type
    if ammo_in_slot ~= 1 then
        return false
    end
   
    local ammo_itemid = getPlayerSlotItem(cid, CONST_SLOT_AMMO).itemid
    local ammo_count = getPlayerItemCount(cid, ammo_itemid) - 1
    ammo_count = ammo_count >= 100 and 100 or ammo_count
    addEvent (
        function ()
            doPlayerRemoveItem(cid, ammo_itemid, ammo_count)
            doPlayerAddItem(cid, ammo_itemid, ammo_count)
        end, 1
    )
    return true
end
 
local combat = createCombatObject()
setCombatParam(combat, COMBAT_PARAM_BLOCKARMOR, 1)
setCombatParam(combat, COMBAT_PARAM_DISTANCEEFFECT, 2)
setCombatParam(combat, COMBAT_PARAM_TYPE, COMBAT_PHYSICALDAMAGE)
 
function onGetFormulaValues(cid, level, skill, attack, factor)
    -- get attack mode
    local damagebase_min = wbdmg_distance_min
    local damagebase_max = wbdmg_distance_max
    if factor == 1.0 then -- player_fight_mode = offensive
        damagebase_min = damagebase_min * 3
        damagebase_max = damagebase_max * 3
    elseif factor == 2.0 then -- player_fight_mode = defensive
        damagebase_min = damagebase_min * 1
        damagebase_max = damagebase_max * 1
    else  -- player_fight_mode = balanced
        damagebase_min = damagebase_min * 2
        damagebase_max = damagebase_max * 2
    end
    -- get weapon attack (bow/crossbow)
    local item1 = getPlayerSlotItem(cid, CONST_SLOT_LEFT)
    local item2 = getPlayerSlotItem(cid, CONST_SLOT_RIGHT)
    local bowattack, hand1, hand2 = 0, 0, 0
    if item1.uid ~= 0 then
        hand1 = getItemInfo(item1.itemid).attack
    end
    if item2.uid ~= 0 then
        hand2 = getItemInfo(item2.itemid).attack
    end
    if hand1 > hand2 then
        bowattack = hand1
    else
        bowattack = hand2
    end
    local atktotal = bowattack + attack -- attack total = bow attack + arrow attack
    skill = getPlayerSkill(cid, SKILL_DISTANCE)
    
    local min_atk_bonus = math.ceil(math.random(6, 12))
    min = ( ((damagebase_min) * (atktotal * 9) * (skill * 3)) + min_atk_bonus ) * -0.10
    max = ( ((damagebase_max) * (atktotal * 9) * (skill * 3)) + min_atk_bonus ) * -1.00
    return min, max
end
setCombatCallback(combat, CALLBACK_PARAM_SKILLVALUE, "onGetFormulaValues")
 
function onUseWeapon(cid, var)
    autoRechargeAmmo(cid)
    return doCombat(cid, combat, var)
end