Slider joints

[#code]

Hello, it's me again. And I'm trying to make joint: Slider shock absorbers. But something goes wrong, and I can not understand that. Please explain how this works. I need the car to fall to the ground and spin the shock absorbers.

Code in RaceCar.lua:

Script.TireMass = 20
Script.SpringForce = 1000
function Script:Start()
	self.Wheels={}
	self.Wheels[0]=self.entity:FindChild("WheelFL")
	self.Wheels[1]=self.entity:FindChild("WheelFR")
	self.Wheels[2]=self.entity:FindChild("WheelRL")
	self.Wheels[3]=self.entity:FindChild("WheelRR")
	self.Axes={}
	for n=0,3 do 
		self.Axes[n]=Pivot:Create()
		self.Axes[n]:SetPosition(self.Wheels[n]:GetPosition())
		self.Axes[n]:SetMass(self.TireMass)
	end
	self.Directions={}
	for n = 0, 1 do
		self.Directions[n]=Pivot:Create(self.Axes[n])
		self.Directions[n]:SetPosition(self.Axes[n]:GetPosition())
	end
	for n=2,3 do
		self.Wheels[n]:SetParent(self.Axes[n])
	end
	for n=0,1 do
		self.Wheels[n]:SetParent(self.Directions[n])
	end
	for n=0,3 do
		pos=self.Axes[n]:GetPosition(true)
		axe=Vec3(0, 1, 0)
		self.Amortisseurs={}
		self.Amortisseurs[n]=Joint:Slider(pos.x, pos.y, pos.z, axe.x,axe.y,axe.z, self.Axes[n], self.entity)
		self.Amortisseurs[n]:EnableLimits()
		self.Amortisseurs[n]:SetLimits(-1,1)
		self.Amortisseurs[n]:SetSpring(self.SpringForce,0.25,5)
	end
	
end

And video:

[#code]

I change script:

Script.TireMass = 5
Script.SpringForce = 1000
function Script:Start()
	self.Wheels={}
	self.Wheels[0]=self.entity:FindChild("WheelFL")
	self.Wheels[1]=self.entity:FindChild("WheelFR")
	self.Wheels[2]=self.entity:FindChild("WheelRL")
	self.Wheels[3]=self.entity:FindChild("WheelRR")
	self.Amortisseurs={}
	self.Axis={}
	self.SecondAxis={}
	for n=0,3 do
		pos=self.Wheels[n]:GetPosition(true)
		self.Axis[n]=Pivot:Create(self.entity)--
		self.Axis[n]:SetPosition(pos, true)
		axe=Vec3(0, 1, 0)
		self.Amortisseurs[n]=Joint:Slider(pos.x, pos.y, pos.z, axe.x,axe.y,axe.z, self.Axis[n], self.entity)
		self.Amortisseurs[n]:EnableLimits()
		self.Amortisseurs[n]:SetLimits(-1,1)
		self.Amortisseurs[n]:SetSpring(self.SpringForce,0.25,5)
	end
	self.Volants={}
	for n=0,1 do
		axe=Vec3(0, 1, 0)
		self.SecondAxis[n] = Pivot:Create(self.Axis[n])--
		pos=self.Wheels[n]:GetPosition(true)
		self.SecondAxis[n]:SetPosition(pos, true)
		self.Volants[n]=Joint:Hinge(pos.x, pos.y, pos.z, axe.x,axe.y,axe.z, self.SecondAxis[n], self.Axis[n])
		self.Volants[n]:EnableLimits() 
		self.Volants[n]:SetLimits(-30,30)
		self.Volants[n]:SetMotorSpeed(200)
		self.Volants[n]:EnableMotor() 
		self.Volants[n]:SetAngle(0)
	end
	for n=2,3 do
		pos=self.Wheels[n]:GetPosition(true)
		axe=Vec3(1, 0, 0)
		self.Volants[n]=Joint:Hinge(pos.x, pos.y, pos.z, axe.x,axe.y,axe.z, self.Wheels[n], self.Axis[n])
		self.Volants[n]:EnableLimits() 
		self.Volants[n]:SetLimits(-30,30)
		self.Volants[n]:SetMotorSpeed(200)
		self.Volants[n]:EnableMotor() 
		self.Volants[n]:SetAngle(0)
	end
	self.ThirdAxis={}
	for n=0,1 do
		pos=self.Wheels[n]:GetPosition(true)
		axe=Vec3(1, 0, 0)
		self.ThirdAxis[n]=Joint:Hinge(pos.x, pos.y, pos.z, axe.x,axe.y,axe.z, self.Wheels[n], self.SecondAxis[n])
		self.ThirdAxis[n]:EnableLimits() 
		self.ThirdAxis[n]:SetLimits(-30,30)
		self.ThirdAxis[n]:SetMotorSpeed(200)
		self.ThirdAxis[n]:EnableMotor() 
		self.ThirdAxis[n]:SetAngle(0)
	end
end


--[[
function Script:UpdateWorld()
	
end
]]


function Script:UpdatePhysics()
end


--[[
--This can be used to select which objects an entity collides with.  This overrides collision types completely.
function Script:Overlap(e)
	return Collision:Collide
end
]]

--[[
function Script:Collision(entity, position, normal, speed)
	
end
]]

--[[
function Script:Draw()
	
end
]]

--[[
function Script:DrawEach(camera)
	
end
]]


--This function will be called after the world is rendered, before the screen is refreshed.
--Use this to perform any 2D drawing you want the entity to display.
function Script:PostRender(context)

end


--[[
--This function will be called when the entity is deleted.
function Script:Detach()
	
end
]]

--[[
--This function will be called when the last instance of this script is deleted.
function Script:Cleanup()
	
end
]]

--[[
--This function will be called upon completion of a one-shot animation played with the PlayAnimation() command.
function Script:EndAnimation(sequence)
	
end
]]

But nothing happens.

MyCar.rar