How do you make buttons unusable if you dont have enough of a certain item? [RESOLVED]

Devices
1

I’m making a tycoon and I got to a problem. I can buy things without having enough money. How can I change this?

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2

Try making vending machines invisible its really nice

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3

I would say block the button with a barrier. Barriers were made to do that stuff.

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4

Oh yeah use a checker and connect it to the barrier so it will deactivate if you have enough

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5

He has the right idea, bro.

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6

Great idea, thank you very much.

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