How to dropdown list of running number till set limit

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Sorry for the unclear subject.

What I trying to do is, I have a stock list of inventory and trying to create a dropdown of running number base on the stock inventory.

Example:

Item - inventory

Apple - 10

Orange - 15

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When select Apple in item,  the quantity will have a selection of dropdown from 1, 2, 3, 4....., 10.

When select Orange, the dropdown will show 1,2,3.... 15.

Any suggest will be appreciated.

Thank you.