Help with a bullet script problem?

So, it seems that this only happens in online mode, the problem is, every time you fire the bullet, it says that crit, mind, and maxd are not valid members of the script. It works if I add a wait, but then you have to fire from a far distance, or else the bullet does nothing.

ball = script.Parent --The bullet
crit = script.Crit.Value -- A value inside the script
mind = script.MinDMG.Value -- Same as above
maxd = script.MaxDMG.Value -- Same-o
damage = math.random(mind,maxd)
if script.Effect.Value == 1 then
	clonedth = script.Effect.Fire:Clone()
	clonedth.Enabled = true
	clonedth.Parent = ball
elseif script.Effect.Value == 2 then
	clonedth = script.Effect.Cor:Clone()
	clonedth.Enabled = true
	clonedth.Parent = ball
elseif script.Effect.Value == 3 then
	clonedth = script.Effect.Spark:Clone()
	clonedth.Enabled = true
	clonedth.Parent = ball
end
	
function onTouched(hit)
	local humanoid = hit.Parent:FindFirstChild("HP")
	local shield = hit.Parent:FindFirstChild("SP")

	if shield ~= nil and shield.Value > 0 then
		tagHumanoid(shield)
		if hit.Name == "Head" then
			shield.Value = shield.Value - damage * crit
		elseif hit.Name == "Torso" then
			shield.Value = shield.Value - damage * 1.1
			if script["Effect"].Value == 1 then
				local chance = math.random(1,2)
				if chance == 1 then
					local clonedth2 = script["Effect"].Fire2:Clone()
					clonedth2.Enabled = true
					clonedth2.Parent = hit
					for i = 1, 10 do
						wait(0.5)
						shield.Value = shield.Value - damage / 7.5
				end
				clonedth2:Destroy()
				end
			elseif script["Effect"].Value == 2 then
				local chance = math.random(1,2)
				if chance == 1 then
				local clonedth2 = script["Effect"].Cor2:Clone()
				clonedth2.Enabled = true
				clonedth2.Parent = hit
				for i = 1, 10 do
					wait(0.5)
					shield.Value = shield.Value - damage / 2
				end
				clonedth2:Destroy()
				end
			elseif script["Effect"].Value == 3 then
				local chance = math.random(1,2)
				if chance == 1 then
				local clonedth2 = script["Effect"].Spark:Clone()
				clonedth2.Enabled = true
				clonedth2.Parent = hit
				for i = 1, 10 do
					wait(0.5)
					shield.Value = shield.Value - damage / 7.5
				end
				clonedth2:Destroy()
				end
			end
			else
			shield.Value = shield.Value - damage
		end

	connection:disconnect()
	ball.Parent = nil
	elseif humanoid ~= nil then
		tagHumanoid(humanoid)
		if hit.Name == "Head" then
			humanoid.Value = humanoid.Value - damage * crit
		elseif hit.Name == "Torso" then
			humanoid.Value = humanoid.Value - damage * 1.1
			if script["Effect"].Value == 1 then
				 local chance = math.random(1,2)
				if chance == 1 then
					local clonedth2 = script["Effect"].Fire2:Clone()
					clonedth2.Enabled = true
					clonedth2.Parent = hit
					for i = 1, 10 do
						wait(0.5)
						humanoid.Value = humanoid.Value - damage / 5
				end
				clonedth2:Destroy()
				end
			elseif script["Effect"].Value == 2 then
					local chance = math.random(1,2)
				if chance == 1 then
				local clonedth2 = script["Effect"].Cor2:Clone()
				clonedth2.Enabled = true
				clonedth2.Parent = hit
				for i = 1, 10 do
					wait(0.5)
					humanoid.Value = humanoid.Value - damage / 7.5
				end
				clonedth2:Destroy()
				end
			elseif script["Effect"].Value == 3 then
				local chance = math.random(1,2)
				if chance == 1 then
				local clonedth2 = script["Effect"].Spark:Clone()
				clonedth2.Enabled = true
				clonedth2.Parent = hit
				for i = 1, 10 do
					wait(0.5)
					humanoid.Value = humanoid.Value - damage / 7.5
				end
				clonedth2:Destroy()
				end
			end
			else
				humanoid.Value = humanoid.Value - damage
		end

	connection:disconnect()
	ball.Parent = nil
	end
end


function tagHumanoid(humanoid)
	-- todo: make tag expire
	local tag = ball:findFirstChild("creator")
	if tag ~= nil then
		local new_tag = tag:clone()
		new_tag.Parent = humanoid
	end
end


function untagHumanoid(humanoid)
	if humanoid ~= nil then
		local tag = humanoid:FindFirstChild("creator")
		if tag ~= nil then
			tag.Parent = nil
		end
	end
end

connection = ball.Touched:connect(onTouched)

wait(8)
ball.Parent = nil