WaitForChild of a variable?

Hi, I wanted to take the Button's name as a variable when that button is clicked on. And by doing so, I plugged in the variable into the WaitForChild, hoping it would detect the button's name and find that in replicated storage. This doesn't seem to be working, any ideas?

This is an attempt of a 3dmodule onto a UI

SelectedPlane = nil
Options = script.Parent.Parent.Parent.group:GetChildren()
for i=1,#Options do
	if Options[i]:IsA("ImageButton") then
		Options[i].MouseButton1Click:connect(function()
			local Button = Options[i]
			SelectedPlane = Button.Name
		end)
	end
end
			
local Frame = script.Parent:WaitForChild("screen")
local Module3D = require(game.ReplicatedStorage:WaitForChild("Module3D"))
local Towers = game.ReplicatedStorage:WaitForChild(SelectedPlane)

local Model3D = Module3D:Attach3D(Frame,Towers)
Model3D:SetDepthMultiplier(1.2)
Model3D.Camera.FieldOfView = 5
Model3D:SetActive(true)

game:GetService("RunService").RenderStepped:Connect(function()
	Model3D:SetCFrame(CFrame.Angles(0,tick() % (math.pi * 2),0) * CFrame.Angles(math.rad(-10),0,0))
end)

Alright, so assuming the relevant lines of code you have a problem with are:

SelectedPlane = nil
Options = script.Parent.Parent.Parent.group:GetChildren()
for i=1,#Options do
	if Options[i]:IsA("ImageButton") then
		Options[i].MouseButton1Click:connect(function()
			local Button = Options[i]
			SelectedPlane = Button.Name
		end)
	end
end

Revised Script

local SelectedPlane = nil
local group = script.Parent.Parent.Parent:WaitForChild("group")

for i, v in pairs(group:GetChildren()) do
	if v:IsA("ImageButton") then
		v.Activated:Connect(function()
			SelectedPlane = v.Name
		end)
	end
end

repeat wait() until SelectedPlane ~= nil

SCRIPT STRUCTURE

You can use in pairs instead of "Options[i]" and using the "local Button = Options[i]"

connect is considered deprecated so capitalize it to Connect

Use Activated rather than MouseButton1Click if you want more devices than just a PC to properly play your game.

DIRECT ISSUES

When you define "Towers" in your above script, you are using "SelectedPlane" while it is still considered nil since the script is running through all lines of code before you can activate the function. To circumvent this, you can add a repeat loop to wait until the "SelectedPlane" is not nil then allow the script to move on.

NOTE

The above script can only be used once based on how it is set-up, so if you need to repeat the "SelectedPlane" cycle again, you will need to disable and re-enable the script.