everytime i respawn my text updating script breaks,can someone help me?

So i have a script for my gun the only problem is when i die the ammo value doesn't change after i re spawn, however everything else still works. it is a server script

local tool = script.Parent

tool.Equipped:Connect(function()
    _G.GUI = true
    while _G.GUI == true do 
        local name = script.Parent.Parent.Name
        if game.Workspace[tostring(name)].Humanoid.Health <= 0 then
            _G.GUI = false
            break
        else
            local gungui = game.Players[tostring(name)].PlayerGui:WaitForChild("gungui")
            local ammo = gungui:WaitForChild("am")
            local maxammo = gungui:WaitForChild("maxam")
            local currentammo = gungui:WaitForChild("Currentammo")

            if gungui:FindFirstChild("Currentammo") then


                currentammo.Text = ammo.Value .."/".. maxammo.Value
                wait()
        end



        end


    end
end)

tool.Unequipped:Connect(function()
    _G.GUI = false
end)

thankyou for reading, any help would be appreciated :)