Why is the IntValue going negative when it's not supposed to?

I am currently creating a gun script and there is two values; CurrentAmmo and MaxAmmo. I created this portion of the script:

mouse.Button1Down:Connect(function()
	if enableMouse == true then
		isFull = false
		currentAmmo.Value = currentAmmo.Value - 1
		print(currentAmmo.Value)
		realFrame:TweenSize(UDim2.new(1,0,currentAmmo.Value / maxAmmo.Value),'In','Sine',.1)
		game.StarterPlayer.Fire:Play()
		if currentAmmo.Value <= 0 then
			reload = true
			gunSound.SoundId = emptyAmmoSound
			backgroundFrame.TextLabel.Visible = true
			realFrame.BackgroundColor3 = Color3.fromRGB(255,0,0)
			currentAmmo.Value = 0
		end
	end
end)

However, the CurrentAmmo keeps going down until negative, despite the script telling it not to. Any help please?

Try this:

if enableMouse == true and currentAmmo.Value<=0 then

I personally believe that little change could help.

The CurrentAmmo turns negative because there is nothing stopping it from doing so. The reload scripts returns the value to zero but only after the gun is fired. I suggest putting the reload script before the event is fired.

Edit kinda late but if you still need it

mouse.Button1Down:Connect(function()
	if enableMouse == true then
	if currentAmmo.Value > 0 then
        isFull = false
        currentAmmo.Value = currentAmmo.Value - 1
        print(currentAmmo.Value)
        realFrame:TweenSize(UDim2.new(1,0,currentAmmo.Value / maxAmmo.Value),'In','Sine',.1)
        game.StarterPlayer.Fire:Play()
	else
            reload = true
            gunSound.SoundId = emptyAmmoSound
            backgroundFrame.TextLabel.Visible = true
            realFrame.BackgroundColor3 = Color3.fromRGB(255,0,0)
            currentAmmo.Value = maxAmmo.Value
        end
   	end
end)