Why is this value not changing through a script?

Hi, so I am making a quiz game with a lot of questions in it. So I am making a string value so I can mention it easier. But the problem is that the last part of the script that changes the country value does nothing. No errors but the value just doesn't change and I have no idea why. Should I bring it out of the starterGUI and in a local script not a normal script? Anything appreciated!

local flagTable = {"rbxassetid://9419075019", "rbxassetid://9419079674", "rbxassetid://9419084230", "rbxassetid://9419087761"}
local flag = flagTable[math.random(1, #flagTable)]
local randomflag = " "
script.Parent.ImageLabel.Image = flag
randomflag = flag

script.Parent.Country.Value = (randomflag)