How do I make it so when I click a TextButton it changes a TextLabel?

I want to have it so when I press a button a TextLabel changes, this is the code I've came up with but it doesn't work.

local player = game.Players.LocalPlayer
local text = player.PlayerGui.GunPick.Screen.LoadoutInfo.ChangeableInfo.Primary.Text
local button = script.Parent

button.MouseButton1Click:Connect(function()
	text =  "Martini Henry"
end)

It doesn't give out any output errors or Script Analysis errors.

###You're misunderstanding variable assignment and property allocation.

This is a common mistake in the early stages of learning to program with game engines. In ROBLOX, you cannot make pointers to an Instance's property. When you reference the .Text value, the compiler in this context will be storing the said value in your variable "text".

To resolve your problem, only reference .Text when you intend to change this property:

local Player = game.Players.LocalPlayer

local TextLabel = player.PlayerGui.GunPick.Screen.LoadoutInfo.ChangeableInfo.Primary
local Button = script.Parent


Button.MouseButton1Click:Connect(function()
	---------------
	TextLabel.Text =  "Martini Henry"
end)