Can someone help me with this group only team change GUI?

So I own a Roblox Army group, and I'm almost done with the base, except I can't seem to get this GUI to work. I'll post the code I have inside the TextButton Below.

function Click(mouse)
if script.Parent.Parent.Parent.Parent.Parent:IsInGroup(4123247) then
script.Parent.Parent.Parent.Parent.Parent.TeamColor = BrickColor.new("Crimson")
end
end

script.Parent.MouseButton1Click:connect(Click)

Any help would be appreciated.

There is no need to use tons of parents. This is local script, meaning you can reference the player by using game.Players.LocalPlayer

Result:

local player = game.Players.LocalPlayer
function Click(mouse)
if player:IsInGroup(4123247) then
player.TeamColor = BrickColor.new("Crimson")
end
end

script.Parent.MouseButton1Click:connect(Click)