So i'm trying to build an airplane, obviously.I have it so it will roll with the use of the "a" and "d" keys, but when I try to have move the nose up or down or left or right, (all relative the the orientation of the plane) by using the mouse, it won't work. 

xx = script.Parent.Parent.X
yy = script.Parent.Parent.Y
tool = script.Parent
typex = script.Parent:WaitForChild("type")
local plr = game.Players.LocalPlayer

local mou = plr:GetMouse()
fliers = {}
tabnum = 0
on = false
heliStor = script:WaitForChild("helinum")
heliType = script.Parent:WaitForChild("type")
for i,v in ipairs (workspace:GetChildren()) do
	if v.Name == heliType.Value then
		if v.pilot.Script.heli.Value == heliStor.Value then
			engin = v.engine
		end
	end
end
bv = engin.BodyVelocity
bg = engin.BodyGyro
while true do
	wait()
		bg.cframe = bg.cframe * CFrame.fromEulerAnglesXYZ(xx.Value,yy.Value,0)
end

That doesn't work but the code for rolling works, (Also has other important detail I guess)

	if on == true and value1 > 100 and ful.Value > 0 then
		script.LocalScript.Disabled = false
	else
		script.LocalScript.Disabled = true
	end
	key = true
	while key == true do
	wait(0.01)
	if typex.Value == "H-12 Fighter Jet" then
		if ful.Value >0 then
	if ky == "a" then
		if on == false then
			print("Engine off.")
		else
			if on == true and value1 > 100 and ful.Value > 0 then
			bg.cframe = bg.cframe * CFrame.fromEulerAnglesXYZ(0,0,0.125)
			end
		end
	elseif ky == "s" then
		if on == false then
			print("Engine off.")
		else
		value1 = value1-1
			bv:findFirstChild("speed").Value = value1
			end
	elseif ky == "d" then
		if on == false then
			print("Engine off.")
		else
			if on == true and value1 > 100 and ful.Value > 0 then
			bg.cframe = bg.cframe * CFrame.fromEulerAnglesXYZ(0,0,-0.125)
			end
			end

and if this might be any help, the code for using the mouse position

wait(2)
local Player = game.Players.LocalPlayer
local Mouse = Player:GetMouse()
	wait()
	print(Mouse.X, Mouse.Y)
	print(Mouse.ViewSizeX, Mouse.ViewSizeY)
local halfx = (Mouse.ViewSizeX / 2)
local halfy = (Mouse.ViewSizeY / 2)
xx = Player.Backpack.ChinookFly.X
yy = Player.Backpack.ChinookFly.Y

while true do
	wait()
xoff = script.Parent.X.Value
yoff = script.Parent.Y.Value
if Mouse.X > halfx then
	script.Parent.xaxis.xmark.Position = UDim2.new(0, Mouse.X-xoff, 0, 0)
	raw = Mouse.X - halfx
	ang = ((raw/Mouse.ViewSizeX))*0.875
	xx.Value = ang
end
if Mouse.X < halfx then
	script.Parent.xaxis.xmark.Position = UDim2.new(0, Mouse.X-xoff, 0, 0)
	raw = halfx - Mouse.X
	ang = ((raw/Mouse.ViewSizeX))*0.875
	xx.Value = -ang
end

if Mouse.Y > halfy then
	script.Parent.yaxis.ymark.Position = UDim2.new(0, 0, 0, Mouse.Y-yoff)
	raw = halfy - Mouse.Y 
	ang = ((raw/Mouse.ViewSizeY))*0.875
	yy.Value = ang
end
if Mouse.Y < halfy then
	script.Parent.yaxis.ymark.Position = UDim2.new(0, 0, 0, Mouse.Y-yoff)
	raw = Mouse.Y - halfy
	ang = ((raw/Mouse.ViewSizeY))*0.875
	yy.Value = -ang
end
end
AnonymousEdited