Tool use cooldown not working as intended?

When the player clicks, it enables a variable bool called "toggle" to true. Then that is supposed to damage the NPC once, but it doesn't. It also doesn't apply the "click to activate toggle". Here's the script.

local weapon = script.Parent.Parent.Handle.HitPart
local dmg = script.Parent.Parent.Interval.Value * 20
local toggle = true

weapon.Touched:Connect(function(part)
    if part.Parent:FindFirstChild("Humanoid") then
        if toggle == true then
            local humanoid = part.Parent:FindFirstChild("Humanoid")
            humanoid:TakeDamage(dmg)
            toggle = false
            wait(1)
            toggle = true
        end
    end
end)

It's a server script inside of another server script inside a tool called "Wooden katana".