I get stuck mid air shooting a rope and then I cant shoot it again, why?

I made a rope shooter script but for some reason I cant swing. I shoot the rope and get stuck mid air unable to move. You shoot the rope by holding R and when you release R the rope dissapears. After it dissapears I cant shoot it again.

Any help please?

--// Variables:

local plr = game.Players.LocalPlayer
local char = plr.Character
local head = char:FindFirstChild("Head")

local athA = Instance.new("Attachment", head)
local athPart = game.Workspace.AttachPart
local athB = Instance.new("Attachment", athPart)
athA.Position = Vector3.new(0,0,-1)
local rope = Instance.new("RopeConstraint", head)
local length = (head.Position - athPart.Position).magnitude
local uis = game:GetService("UserInputService")
isSwinging = false

--// Functions:

uis.InputBegan:connect(function(key)
    if key.KeyCode == Enum.KeyCode.R  then
        if isSwinging == false then
            isSwinging = true
            rope.Attachment0 = athA
            rope.Attachment1 = athB
            rope.Length = length
            rope.Visible = true
        end
    end
end)

uis.InputEnded:connect(function(key)
    if key.KeyCode == Enum.KeyCode.R then
        if isSwinging == true then
            isSwinging = false
            rope.Attachment0:Destroy()
            rope.Attachment1:Destroy()
        end
    end
end)

https://vimeo.com/user90972315/review/296864730/5403a5d191 Here is how it looks like.

LocalScript inside StarterCharacterScripts