Value not changing in gui local script

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#1 
local InSpace = script.Parent:WaitForChild("InSpace")
local Oxygen = script.Parent:WaitForChild("Oxygen")
local Radiation = script.Parent:WaitForChild("Radiation")
local Total = 100

InSpace:GetPropertyChangedSignal("Value"):Connect(function()
	if InSpace.Value == true then
		while InSpace == true do
			Oxygen.Value = Oxygen.Value - 1
			print("a")
			script.Parent:WaitForChild("OxygenMeter"):WaitForChild("Fill").Size = UDim2.new(1,0,(Oxygen.Value/Total),0)
			wait(2)
		end
	end
end)

i’m trying to do an oxygen system for my game and when i try to decrease it’s value it’s stays the same and won’t change.

i don’t get any error messages and i’m trying to figure out why
image

this is what my gui looks like

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#2

is the “a” statement printing?

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#3

it’s not printing either, i don’t know what’s wrong

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#4

Ok. Just to figure out what part is going wrong, after the GetPropertyChangedSignal() statement, do print("Recieved") and make it print those variable values. Tell me what prints and what doesn’t.

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#5

i may have figured it out, i didn’t put the .Value on the while InSpace == true do loop

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