How do I make a backpack system?

I am trying to make a backpack system that caps the amount of currency I am allowed to have. So, for example, it would be 0/25 or 4/25. I can't seem to figure out what's wrong, I have tried making it so that if my currency goes above 25 then it gets set to 25 but it doesn't seem to be registering that I set it equal to 25. The script I have is

if currency.Value > 25 then

currency.Value = 25

end

Can someone please help me, thanks.

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Make sure you're running your currency check after every instance that the currency amount changes. By itself it will only run once when the script is initially loaded.