Lock local script until other local script is used?

Hey, I'm trying to make a game where you have 4 characters at all times, where you can switch between them. When you press for example "J" you become one custom character and if you press it again you come back to your Roblox character again. But I'm having a problem where if you press "J" twice the game activates both scripts. I only want the script to be able to run when I'm not currently that character. My code does have some unused parts from testing around.

local uis = game:GetService("UserInputService")
local mFrame = script.Parent.MenuFrame
local player = game:GetService("Players").LocalPlayer
local remote = game.ReplicatedStorage.Remotes.SwitchCharacter
local CurCharacter =  game.Players.LocalPlayer.Character
local NewCharacter = game.Workspace.TestDum
local camera = workspace.CurrentCamera
local keycode = Enum.KeyCode.J
local ImagePos = script.Parent.MenuFrame.Position
local origin = script.Parent


uis.InputBegan:Connect(function(input,gameProcessedEvent)
    if input.KeyCode == keycode then

        print("fired")
        remote:FireServer(CurCharacter, NewCharacter,keycode, ImagePos, origin)
        camera.CameraSubject = NewCharacter

    end
end)

These are the local scripts for the custom characters so it's used 3 times for the 3 different characters

local remote = game.ReplicatedStorage.Remotes.SwitchCharacter
local CharacterSwitch =require(game.ServerScriptService.SwitchCharacter)
local key = nil
local origin1 = nil
local function SwitchCharacter(player, CurCharacter, NewCharacter,keycode, ImagePos, origin)
        print(CurCharacter,NewCharacter)
    if key == keycode then
        remote:FireClient(player, keycode, ImagePos, NewCharacter)      
    else
        if origin == "char1" then
        CurCharacter.Archivable= true   
        local CurAi = player.Character:Clone()
        --local CurMovement = NewCharacter.MoveScript:Clone()
        CurAi.Parent = workspace
        --CurMovement.Parent = CurAi
        --NewCharacter.MoveScript:Destroy()
        player.Character = NewCharacter
        key = keycode       
        end
    end



end


remote.OnServerEvent:Connect(SwitchCharacter)

This server script is where you actually change character

local uis = game:GetService("UserInputService")
local mFrame = script.Parent.MenuFrame
local player = game:GetService("Players").LocalPlayer
local remote = game.ReplicatedStorage.Remotes.SwitchCharacter
local CurCharacter =  game.Players.LocalPlayer.Character
local New = nil
local camera = workspace.CurrentCamera
local key = nil


local function idfk(Keycode, Imagepos,NewCharacter)
    print(Keycode)
    if script.Value.Value == false then
        script.Parent.MenuFrame.Visible = true
        key = Keycode
        print(key)
        script.Parent.MenuFrame.Position = Imagepos
        New = NewCharacter      
        script.Value.Value = true
    elseif script.Value.Value == true then
        script.Parent.MenuFrame.Visible = false
        script.Value.Value = false


    end
    end

remote.OnClientEvent:Connect(idfk)
uis.InputBegan:Connect(function(input,gameProcessedEvent)
    if input.KeyCode == key then

        remote:FireServer(New, CurCharacter)
    end
end)

this is the local script where you can change back to your original character

I'm sorry that the code is a messy, but I hope that it shows what I'm trying to do so you can teach me what I need to implement the feature :)