"Unable to cast to dictionary" error... but instances aren't solving it..?

Help and Feedback Scripting Support
#1

I’m currently running into a problem making a few sliding doors not tween and throw an error. First off, I got the main body of this from an AlvinBlox video, the script was super outdated so I updated it to not throw any errors in the script analysis; however, I’m now facing a “Unable to cast to Dictionary” error whenever I load the game.

I looked it up on the Devforum and Developer Wiki and it seems that the simple fix is to change the first bit of all of the TweenService:Create() to an instance… but according to the developer wiki on instance, “WaitForChild” makes my first variables all instances. I’m at a loss on how to solve this issue and/or improve my code. I’ve pasted everything I have here if someone wouldn’t mind helping me out.

local TweenService = game:GetService("TweenService")
local d1 = script.Parent.SlidingDoor1:WaitForChild("Glass")
local d2 = script.Parent.SlidingDoor2:WaitForChild("Glass")
local tweeningInfo = TweenInfo.new(
	0.25,
	Enum.EasingStyle.Linear,
	Enum.EasingDirection.Out,
	0,
	false,
	0
)
local detectorPart = script.Parent:WaitForChild("Detector")

local d1Open
local d2Open
local d1Close
local d2Close

if detectorPart.Orientation == Vector3.new(0, 90, 0) or detectorPart.Orientation == Vector3.new(0, -90, 0) or detectorPart.Orientation == Vector3.new(0, 270, 0) or detectorPart.Orientation == Vector3.new(0, -270, 0) then
	d1Open = CFrame.new(d1.Position-Vector3.new(4.25,0,0))
	d2Open = CFrame.new(d1.Position+Vector3.new(4.25,0,0))
	d1Close = CFrame.new(d1.Position)
	d2Close = CFrame.new(d2.Position)
else
	d1Open = CFrame.new(d1.Position-Vector3.new(0,0,4.25))
	d2Open = CFrame.new(d1.Position+Vector3.new(0,0,4.25))
	d1Close = CFrame.new(d1.Position)
	d2Close = CFrame.new(d2.Position)
end

local tween1open = TweenService:Create(d1,tweeningInfo,d1Open)
local tween1close = TweenService:Create(d1,tweeningInfo,d1Close)
local tween2open = TweenService:Create(d2,tweeningInfo,d2Open)
local tween2close = TweenService:Create(d2,tweeningInfo,d2Close)

script.Parent.Detector.Touched:Connect(function(hit)
	tween1open:Play()
	tween2open:Play()
	wait(3)
	if hit == true then
		return
	end
	tween1close:Play()
	tween2close:Play()
end)

Thank you very much :heart:

#2

I quickly skimmed through the code, and it looks like the error is caused by your call to TweenService’s Create method. The third parameter, “propertyTable”, on the wiki is supposed to be a dictionary, but you supply a CFrame. The script errors because it tries to cast the CFrame to a dictionary.

The propertyTable should contain key-value pairs where each key is the property name to tween and the value is the target value to tween to.

Ex:

local propertyTable = {
  CFrame = d1Open
}

local tween1open = TweenService:Create(d1, tweeningInfo, propertyTable)

Hope this helps.

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