Why doesn't this script make me levitate and then move to my target location?

The code is for some rocket boots but they are not currently working, this is my local script in the starterGui:

player = game.Players.LocalPlayer
spacedown = false
mouse = player:GetMouse()
startedDown = 0
character = player.character

mouse.KeyDown:connect(function(key)
	if key:lower() == " " then
	    spacedown = true
	    startedDown = tick()
	end
end)

mouse.KeyUp:connect(function(key)
	if key:up() == " " then
    	spacedown = false
	end
end)

function Elevate()
	if character["Left Leg"]:findFirstChild("Rocketboot") ~= nil and character["Right Leg"]:findFirstChild("Rocketboot") ~= nil then
    	if spacedown then
        	print("Was held for ", tick() - startedDown,"seconds")
        	-- Time between now and when `startedDown` was set
			if tick() - startedDown > 2 then -- If held for longer than 2 seconds
				local float = Instance.new("BodyVelocity", character.Torso).force 
				float.Parent.name = "float"
				float = Vector3(0, 196.2*character.Torso:GetMass(), 0) -- Apply force to make the character levitate
				local body = Instance.new("BodyVelocity",character.Torso) --Create BodyVelocity and Parents it to Player's Torso.
				body.name = "Body"				
				body.maxForce = Vector3.new(1e7,1e7,1e7)--The the Maximum amount of force the BodyVelocity can use.
				body.velocity = character.Torso.CFrame.lookVector*40*2--Change the Body's Velocity to the way the Character's Head if facing.
				character["Left Leg"]:findFirstChild("Rocketboot").Thrust1.Transparency = 0.5
				character["Right Leg"]:findFirstChild("Rocketboot").Thrust2.Transparency = 0.5
			end
		elseif not spacedown then
			character.Torso.float:remove()
			character.Torso.body:remove()
			character["Left Leg"]:findFirstChild("Rocketboot").Thrust1.Transparency = 1
			character["Right Leg"]:findFirstChild("Rocketboot").Thrust2.Transparency = 1
		end
    end
end

spacedown.Changed:connect(Elevate)

Please can you tell me of any point in which my code is inefficient or could use improvement, currently the error is on line 5:

11:07:11.442 - character is not a valid member of Player 11:07:11.443 - Script 'Players.Player.PlayerGui.LocalScript', Line 5 11:07:11.444 - Stack End

Remember Lua is case sensitive which means that you'll need change character = player.character to character = player.Character! This is the reason why you had an Error saying:

character is not a valid member of Player

Also remove() is deprecated so use Destroy() whenever possible and try and use UserInputService when dealing with the User's device input.

If you have anymore question/comment, please feel free to leave a comment down below.

-UserOnly16Characters