How do i get my text GUI to update properly?

I checked through the website and all of the results i wanted didnt help fix my issue so i am now asking for help. I am having an issue with a gui changing script where the printing works properly but hte GUI doesnt update at all. the code is:

--instances
local Player = game:GetService("Players").LocalPlayer
local Text = script.Parent.Text
local Color = script.Parent.TextColor
local Textchange = script.Parent.TextChange
--functions
local function SetText(Ammo, Ammocap)
	print(Ammo.."/"..Ammocap)
	print("before if argument")
	if Ammo / Ammocap < 1.5 then
		Color = Color3.new(0.807843, 0, 0)
		print("in if argument")
	end
	print("after if argument")
	Text = Ammo.."/"..Ammocap
end

--function connects
Textchange.Event:Connect(function(Ammo, Ammocap)
	print("triggered Bindable Event")
	SetText(Ammo, Ammocap)
end)

alos i am certain that all of my instances are correct, hte text just doesnt update correctly

I would recommend testing if tostring() works. I'm assuming Ammo and Ammocap are ints, meaning when you try to append a string to them it doesn't automatically change them. So test if this works on line 15: Text= tostring(Ammo).."/"..tostring(Ammocap), if it does please mark this as the answer, otherwise comment on this if there's an error or anything! Good Luck