Unable To Cast Dictionary

[BIGM_7 (Monkeoleon)]

For my Roblox game I am creating a character selection GUI that allows the player to switch between multiple skillsets.
When attempting to tween the GUI to it’s given location I receive the error : Unable to cast to Dictionary - Client - LocalScript:12.
I have looked at multiple posts from other developers but overall have found no common error with any post.

Code - Located In StarterGUI

local CharacterSelectorEvent = game.ReplicatedStorage.CharacterSwitch:WaitForChild("CharacterSelect")
local CurrentClass = ""

script.Parent.Parent.MouseButton1Click:Connect(function()
	if script.Parent.UIEnabled == false then
		script.Parent.UIEnabled.Value = true
		local TS = game:GetService("TweenService"):Create(script.Parent, TweenInfo.new(1, Enum.EasingStyle.Linear, Enum.EasingDirection.Out), {Size = 0, 149,0, 135})
		local TS2 = game:GetService("TweenService"):Create(script.Parent.UIGridLayout, TweenInfo.new(1, Enum.EasingStyle.Linear, Enum.EasingDirection.Out), {CellSize = 0,150,0,40})
		TS:Play()
		TS2:Play()
	elseif script.Parent.UIEnabled.Value == true then
		local TS3 = game:GetService("TweenService"):Create(script.Parent, TweenInfo.new(1, Enum.EasingStyle.Linear, Enum.EasingDirection.Out), {Size = 0, 149,0, 0})
		local TS4 = game:GetService("TweenService"):Create(script.Parent.UIGridLayout, TweenInfo.new(1, Enum.EasingStyle.Linear, Enum.EasingDirection.Out), {CellSize = 0,150,0,0})
		script.Parent.UIEnabled.Value = false
		TS3:Play()
		TS4:Play()
	end
end) 
for i,v in pairs(script.Parent:GetChildren()) do
	if v:IsA("TextButton") then
		v.MouseButton1Click:Connect(function()
			for i2,v2 in pairs(game.ReplicatedStorage.Accessories:GetChildren()) do
				if v2.Name.."Button" == v.Name then
					local Player = script.Parent.Parent.Parent
					local Character = Player.Character
					if Character.Humanoid.Health == Character.Humanoid.MaxHealth then
						Player:LoadCharacter()
						CurrentClass = v2.Name
						wait(1)
						for i3, v3 in pairs(v2:GetChildren()) do
							v3.Tools:Clone().Parent = Player.Backpack
							local TS5 = game:GetService("TweenService"):Create(script.Parent.KojiroButton, TweenInfo.new(1, Enum.EasingStyle.Linear, Enum.EasingDirection.Out), {Size = 0, 149,0, 0})
							local TS6 = game:GetService("TweenService"):Create(script.Parent.BuddahButton, TweenInfo.new(1, Enum.EasingStyle.Linear, Enum.EasingDirection.Out), {CellSize = 0,150,0,0})
							script.Parent.UIEnabled.Value = false
							wait(1)
							TS5:Play()
							TS6:Play()

						end
					end
				end
			end
		end)
	end
end

[RatiusRat (Boopmaster)]

You need to wrap the property values with their respected datatypes, e.g for size, use UDim2.new()

[Jessehenxe (Henxe)]

You don’t have to use tweenservice to tween any type of gUI, this this case you can just tween the frame like this:

local frame = script.Parent

frame:TweenPosition(
     Udim2.new(0,0,0), -- Set this to the desired position
     Enum.EasingDirection.Out, -- Direction
     Enum.EasingStyle.Linear, -- Style
     1, -- Time
     false -- Overides a tween that is already playing?
) 

[BIGM_7 (Monkeoleon)]

Thank You! I Can’t Believe I Didn’t Notice That

[T3_MasterGamer (NotReal)]

I don’t recommend this from my experience. When I used this the frame didn’t tween as expected, while using TweenService tweened as expected