0 meso/0 item dupe

Does anyone know how to fix the hired merchant dupe where you change the quantity and meso to 0 and you can keep sending that packet until u have all the items you want inside merchant, then take them out and you have all the items duped/the same. I was thinking of adding a check where it sees if your merchant has an item of 1 but can someone help?

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Bump, does anyone know?

Can someone please help me. Not trying to be a begger here but I need to patch this as fast as possible. Been trying since i released this thread but im lost.

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nevermind i found how to fix it.

check if quantity and meso is > 0 or you can do if < 1 then ban. simple as that.