Grenade works properly in a local test, but not with filtering enabled?

I'm new to scripting and I'm trying to make a grenade compatible with filtering enabled. In a local test it works like it should, but in a team test the grenade throws but in one specific direction. What I mean by this is that if I aim at a specific point, the grenade could, say, throw behind me as if it was heading toward one specific spot. It's probably something simple I'm missing, but it ALWAYS goes towards the same exact direction no matter which way my character faces. Any help would be greatly appreciated.

Tool = script.Parent

function fire(v)
	Tool.Handle.Fire:play()
	local vCharacter = Tool.Parent
	local vPlayer = game.Players:playerFromCharacter(vCharacter)
	local missile = Instance.new("Part")
	local spawnPos = vCharacter.PrimaryPart.Position
	Tool.GripPos = Vector3.new(0, 0.4, 0.5)
	vCharacter.Torso["Right Shoulder"].CurrentAngle = 3
	spawnPos  = spawnPos + (v * 8)
	missile.Position = spawnPos
	missile.Size = Vector3.new(1,1,1)
	missile.Velocity = v * 60
	missile.Name = "Grenade"
	missile.BrickColor = BrickColor.new("Medium green")
	local force = Instance.new("BodyForce")
	force.force = Vector3.new(0,100,0)
	force.Parent = missile
	Tool.Sound:clone().Parent = missile
	Tool.Kill:clone().Parent = missile
	Tool.Smoke:clone().Parent = missile
	Tool.Handle.Mesh:clone().Parent = missile
	Tool.Script:clone().Parent = missile

	local counter = Instance.new("ObjectValue")
	counter.Value = game.Players:GetPlayerFromCharacter(Tool.Parent)
	counter.Parent = missile
	counter.Name = "creator"

	missile.Parent = game.Workspace
end

Tool.Enabled = true
function onActivated()
	if not Tool.Enabled then
		return
	end
	Tool.Enabled = false
	local character = Tool.Parent;
	local humanoid = character.Humanoid
	if humanoid == nil then
		print("Humanoid not found")
		return 
	end
	local targetPos = humanoid.TargetPoint
	local lookAt = (targetPos - character.Head.Position).unit
	fire(lookAt)
	wait(0.1)
	Tool.Parent = nil
end


script.Parent.Activated:connect(onActivated)

http://robloxdev.com/articles/Converting-From-Experimental-Mode http://robloxdev.com/articles/Building-Games-with-Experimental-Mode-Off

Okay, so for anyone else with this same question, the problem lies within the Humanoid.TargetPoint - basically, this value cannot be accessed from server scripts because it is local. Roblox used to have this be able to be accessed from the server, so many old weapons can be affected. An extremely simple workaround to this is a couple of scripts someone already made to make this accessible from the server like it used to be.

https://www.roblox.com/library/167731549/TargetPoint-Fix-for-FilteringEnabled

Just put the scripts in the right places and you're good to go.