[HELP] DayZ inventory Take all buttom error

[property]

Hi! My problem the that the dayz inventory take all buttom error the script.

Take all button

Code:

function onPlayerMoveItemInInventoryALLL () 
local itemName = guiGridListGetItemText ( gridlistItems["loot"], guiGridListGetSelectedItem ( gridlistItems["loot"] ), 1 ) 
local quant = guiGridListGetItemText ( gridlistItems["loot"], guiGridListGetSelectedItem ( gridlistItems["loot"] ), 2) 
local quantfinal = getItemSlots(itemName)*quant --[[ 848. row error message]] 
if isPlayerInLoot() then 
    if getElementData(isPlayerInLoot(),itemName) and getElementData(isPlayerInLoot(),itemName) >= 1 then 
        if not isToolbeltItem(itemName) then 
            if getPlayerCurrentSlots() + quantfinal <= getPlayerMaxAviableSlots() then 
                if not playerMovedInInventory then 
                    triggerEvent("onPlayerMoveItemInInventory",getLocalPlayer(),itemName,isPlayerInLoot()) 
                    playerMovedInInventory = false 
                end  
            else 
                startRollMessage2("Inventory", "Inventory is full!", 255, 22, 0 ) -- [iD:0000005 - Several grammar + spelling mistakes and typos] //L 
                return 
            end 
        else 
            playerMovedInInventory = false 
            triggerEvent("onPlayerMoveItemInInventory",getLocalPlayer(),itemName,isPlayerInLoot()) 
        end 
    end 
    if isPlayerInLoot() then 
        local gearName = guiGetText(headline["loot"]) 
        local col = getElementData(getLocalPlayer(),"currentCol") 
        setTimer(refreshInventory,200,2) 
        setTimer(refreshLoot,200,2,col,gearName) 
    end 
end  
end 
  
function aaxa() 
local quant = guiGridListGetItemText ( gridlistItems["loot"], guiGridListGetSelectedItem ( gridlistItems["loot"] ), 2) 
setTimer(onPlayerMoveItemInInventoryALLL,100,quant) 
end 
addEventHandler ( "onClientGUIClick", buttonItems["loot2"], aaxa ) 

debugscript message (error): DayZ\inventory.lua:848: attempt to perform arithmetic on a boolean value