How to find a variable my combining strings

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#1 
while true do
	
	("Tween"..TweenPlayingValue.Value):Play()
	MotorOn.Changed:Connect(MotorOnOffValueTrigger)
	
	("Tween"..TweenPlayingValue.Value).Completed:Wait()


end

How do you combine 2 strings to find a variable. Here there is a variable called Tween1

I want the while true do to play Tween…“The value of the variable”, which could have a value of 1-8. Depending on the value, it will play tween1-8. How do you do this, as im getting a error on the script saying this

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#3

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still has the error, after putting tostr

#4

that’s weird, you could print the chosen tween for debug

#5

Lua doesn’t support that kind of dynamic variable lookup directly. Instead, concatenating a string like this will just produce a string value, not a reference to an actual variable.

("Tween"..TweenPlayingValue.Value) creates a string but doesn’t translate into a variable reference, so Lua won’t recognise it as Tween1, Tween2, etc. Additionally, Lua throws an error about ambiguous syntax because it tries to interpret the parentheses as part of a function call.

There are workarounds but they are heavily dependent on what your environment is like.

#6

So my only option now would be to do something like this?

If TweenPlayningValue == 1 then
play tween1
else Tweelplayingvalue == 2 then
play tween2

etc 8 times?

#7

surely that’ll work aaaaaaaaaaaaaaaaaaa

#8

Not quite, you don’t have to manually write out each condition. There’s a better way to handle it without repeating code, using either the _G global table or a table of tweens.

Solution with _G (for Global Variables)

If Tween1, Tween2, etc., are global variables (defined without local), you can use Lua’s _G table to access them dynamically based on TweenPlayingValue.Value:

while true do
    -- build the name dynamically
    local tweenVariableName = "Tween" .. TweenPlayingValue.Value
    -- access the tween via the _G table
    local tweenToPlay = _G[tweenVariableName]

    if tweenToPlay then
        tweenToPlay:Play()
        MotorOn.Changed:Connect(MotorOnOffValueTrigger)
        tweenToPlay.Completed:Wait()
    else
        print("Invalid tween variable: " .. tweenVariableName)
    end
end

But this approach only works if each tween variable (Tween1, Tween2, etc.) are global.

Solution with a Table (for Local Variables)

A safer approach is to store your tweens in a table, which avoids global variables. Here’s how:

  1. Define a table with all the tweens.
  2. Access the tween directly by index.
-- define all tweens in a table
local tweens = {Tween1, Tween2, Tween3, Tween4, Tween5, Tween6, Tween7, Tween8}

while true do
    local tweenToPlay = tweens[TweenPlayingValue.Value] -- access by index, so if the tweenplayingvalue is 3 it will catch the 3rd index in the table, which is tween3
    
    if tweenToPlay then
        tweenToPlay:Play()
        MotorOn.Changed:Connect(MotorOnOffValueTrigger)
        tweenToPlay.Completed:Wait()
    else
        print("Invalid tween value: " .. TweenPlayingValue.Value)
    end
end

Please try both solutions and tell me if either work, along with any error messages or concerns.
If these solutions fail, please provide me with more of a script preview so I can tell what I’m working with.

#9

Solution with the table worked! Thank you so much
[That was kinda smart btw]

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