Very simple executor in luaU

--Services
local PlayerGui = game.Players.LocalPlayer:WaitForChild("PlayerGui")
local TweenService = game:GetService("TweenService")
local Players = game:GetService("Players")
local player = Players.LocalPlayer

-- Create GUI
local gui = Instance.new("ScreenGui")
gui.Name = "GooshUI"
gui.Parent = PlayerGui

-- Image background
local Background = Instance.new("ImageLabel")
Background.Name = "BackgroundImage"
Background.Size = UDim2.new(0.488, 0, 0.419, 0)
Background.Image = "rbxassetid://120321730706642"
Background.BackgroundTransparency = 1
Background.Position = UDim2.new(0.256, 0, 0.289, 0)
Background.Parent = gui

-- UI corners for frame
local frameCorner = Instance.new("UICorner")
frameCorner.CornerRadius = UDim.new(0, 12)
frameCorner.Parent = Background

-- This is a bar at the Top frame!
local Bar = Instance.new("Frame")
Bar.Size = UDim2.new(1, 0, 0.101, 0)
Bar.Position = UDim2.new(0, 0, 0, 0)
Bar.BackgroundColor3 = Color3.fromRGB(56, 56, 56)
Bar.Parent = Background

-- UICorner for Bar
local barCorner = Instance.new("UICorner")
barCorner.CornerRadius = UDim.new(0, 12)
barCorner.Parent = Bar

-- This is the button to be later used to close the UI!
local Close = Instance.new("TextButton")
Close.Name = "CloseButton"
Close.Text = "X"
Close.Position = UDim2.new(0.902, 0, 0, 0)
Close.TextColor3 = Color3.fromRGB(255, 0, 0)
Close.TextSize = 28
Close.Font = Enum.Font.LuckiestGuy
Close.Size = UDim2.new(0.098, 0, 1, 0)
Close.BackgroundTransparency = 1
Close.Parent = Bar

-- Label this is the Welcome label or the name of the ui
local WelcomeLabel = Instance.new("TextLabel")
WelcomeLabel.Name = "WelcomeLabel"
WelcomeLabel.Size = UDim2.new(0.391, 0, 1, 0)
WelcomeLabel.Position = UDim2.new(0.326, 0, 0, 0)
WelcomeLabel.TextSize = 28
WelcomeLabel.TextColor3 = Color3.fromRGB(255, 255, 255)
WelcomeLabel.Font = Enum.Font.LuckiestGuy
WelcomeLabel.BackgroundTransparency = 1
WelcomeLabel.Text = "Goosh-UI-V1!"
WelcomeLabel.Parent = Bar

-- Improved TextBox
local ScriptBox = Instance.new("TextBox")
ScriptBox.Name = "ScriptBox"
ScriptBox.Size = UDim2.new(0.96, 0, 0.6, 0)
ScriptBox.Position = UDim2.new(0.02, 0, 0.15, 0)
ScriptBox.AnchorPoint = Vector2.new(0, 0)
ScriptBox.TextColor3 = Color3.fromRGB(255, 255, 255)
ScriptBox.TextSize = 12
ScriptBox.BackgroundColor3 = Color3.fromRGB(29, 29, 29)
ScriptBox.BackgroundTransparency = 0.1
ScriptBox.ClearTextOnFocus = false
ScriptBox.MultiLine = true
ScriptBox.TextWrapped = true
ScriptBox.TextXAlignment = Enum.TextXAlignment.Left
ScriptBox.TextYAlignment = Enum.TextYAlignment.Top
ScriptBox.PlaceholderText = "Paste your script here..."
ScriptBox.Parent = Background

-- TextBox Corner
local boxCorner = Instance.new("UICorner")
boxCorner.CornerRadius = UDim.new(0, 8)
boxCorner.Parent = ScriptBox

-- Execute Button
local Execute = Instance.new("TextButton")
Execute.Name = "ExecuteButton"
Execute.Size = UDim2.new(0.23, 0, 0.15, 0)
Execute.Position = UDim2.new(0.02, 0, 0.78, 0)
Execute.Font = Enum.Font.LuckiestGuy
Execute.BackgroundColor3 = Color3.fromRGB(27, 27, 27)
Execute.TextColor3 = Color3.fromRGB(255, 255, 255)
Execute.TextSize = 24
Execute.Text = "Execute"
Execute.Parent = Background

-- Execute Button Corner
local executeCorner = Instance.new("UICorner")
executeCorner.CornerRadius = UDim.new(0, 12)
executeCorner.Parent = Execute

-- Clear Button
local Clear = Instance.new("TextButton")
Clear.Name = "ClearButton"
Clear.Size = UDim2.new(0.23, 0, 0.15, 0)
Clear.Position = UDim2.new(0.27, 0, 0.78, 0)
Clear.Font = Enum.Font.LuckiestGuy
Clear.BackgroundColor3 = Color3.fromRGB(27, 27, 27)
Clear.TextColor3 = Color3.fromRGB(255, 255, 255)
Clear.TextSize = 24
Clear.Text = "Clear"
Clear.Parent = Background

-- Clear Button Corner
local clearCorner = Instance.new("UICorner")
clearCorner.CornerRadius = UDim.new(0, 12)
clearCorner.Parent = Clear

-- Code/Logic

-- Close button functionality
Close.MouseButton1Click:Connect(function()
    Close.Active = false -- makes the button unactive first
    
    local tweenInfo = TweenInfo.new(0.5, Enum.EasingStyle.Quad, Enum.EasingDirection.Out) -- info about the tween like wich animations and shit
    
    local tween1 = TweenService:Create(Background, tweenInfo, {ImageTransparency = 1}) -- image Transparency is other then background one so yeah then u know!
    
    local tween2 = TweenService:Create(Bar, tweenInfo, {BackgroundTransparency = 1})

    local tween3 = TweenService:Create(WelcomeLabel, tweenInfo, {TextTransparency = 1})

    local tween4 = TweenService:Create(Close, tweenInfo, {TextTransparency = 1})

    local tween5 = TweenService:Create(ScriptBox, tweenInfo, {BackgroundTransparency = 1, TextTransparency = 1})

    local tween6 = TweenService:Create(Execute, tweenInfo, {BackgroundTransparency = 1, TextTransparency = 1})

    local tween7 = TweenService:Create(Clear, tweenInfo, {BackgroundTransparency = 1, TextTransparency = 1})
    
    -- Play all tweens
    tween1:Play()
    tween2:Play()
    tween3:Play()
    tween4:Play()
    tween5:Play()
    tween6:Play()
    tween7:Play()
    
    wait(1) -- wait 1 sec
    gui:Destroy() -- destroys the gui
end)

Clear.MouseButton1Click:Connect(function()
    ScriptBox.Text = ""
end)

Execute.MouseButton1Click:Connect(function()
    local scriptText = ScriptBox.Text
    if scriptText and scriptText ~= "" then
        print("Executing...")
        
        local success, errorMessage = pcall(function()
            loadstring(scriptText)()
        end)
        
        if not success then
            print("Error executing script:", errorMessage)
        else
            print("Script executed successfully!")
        end
    else
        print("ScriptBox is empty")
    end
end)

-- variables
local dragging
local dragInput
local dragStart
local startPos

local function updateInput(input) -- this a fuction thats gonna be later used for update the input so it can fucking work
    local delta = input.Position - dragStart
    Background.Position = UDim2.new(
        startPos.X.Scale, 
        startPos.X.Offset + delta.X, 
        startPos.Y.Scale, 
        startPos.Y.Offset + delta.Y
    )
end

Bar.InputBegan:Connect(function(input)
    if input.UserInputType == Enum.UserInputType.MouseButton1 then -- FIX 1: Changed = to ==
        dragging = true
        dragStart = input.Position
        startPos = Background.Position -- FIX 2: Should be Background, not Bar!
        
        input.Changed:Connect(function()
            if input.UserInputState == Enum.UserInputState.End then
                dragging = false
            end -- FIX 3: Added this missing 'end'
        end)
    end
end) -- This was missing in your code

-- FIX 4: Missing the InputChanged and InputEnded connections
Bar.InputChanged:Connect(function(input)
    if input.UserInputType == Enum.UserInputType.MouseMovement then
        dragInput = input
    end
end)

Bar.InputEnded:Connect(function(input)
   if input.UserInputType == Enum.UserInputType.MouseButton1 then
        dragging = false
    end 
end)

-- FIX 5: Need to connect to RenderStepped or Heartbeat to update position continuously
game:GetService("UserInputService").InputChanged:Connect(function(input)
    if dragging and input.UserInputType == Enum.UserInputType.MouseMovement then
        updateInput(input)
    end
end)