IntValue ignores the fact that it's value changes. Why?

I made a script where as long as it's activated, a loop runs to increase IntValueA by IntValueB.

For Example: IntValueA = 0 IntValueB = 10

The first loop runs, and IntValueA is now 10, it runs again and it becomes 20. Normal and works perfect. If I change IntValueB however, it still increases by 10 instead of whatever I set it to. Why?? Also, Damage is IntValueB, Charge is IntValueA.

local debounce = false
local damage = script.Parent.Damage 

script.Parent.Activated:Connect(function()
    if debounce==false then
    debounce = true
    script.Parent.Charging.Value = true
    while script.Parent.Charging.Value==true do 
            print(damage.Value)
            script.Parent.Charge.Value = script.Parent.Charge.Value +(damage.Value)
            print ("obama")
            if script.Parent.Charging.Value==false then 
            break
            end
            wait(1)
            end
    end
end)

script.Parent.Deactivated:Connect(function()
    print ("Nobama")
    script.Parent.Charging.Value = false
    wait(0.5)
    script.Parent.Charge.Value = 0
    wait(1.5)
    debounce = false
end)