How to change name attribute of field

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How to get custom field value of product in client or server script?

Hello community! I have alcohol products, so it has units such as %, ml and so on. I need help understanding how to include a special tax, for the moment I can’t find a way of doing it with the system. Brief summary: In our country El Salvador, alcoholic beverages are subject to 2 specific taxes: 1)Alcoholic specific content tax (Alicuota) :** It’s a specific amount (not percentage) charged per each 1% of alcohol content per liter of alcoholic beverage. Each type of liquor has a particular t…