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We need to something like this [login to view URL] for Magento 2 where the customer in the product options must have opportunity to place the maximum number of characters that can be entered, from a 1 minimum number to a maximum number of 12 characters. With option to be able to limit characters per product. In certain products avrano opportunity to insert from 1 to 3 characters, at other 4, gradually increasing 5 or 6 or 7... Particularity of this is that the letters are not free, but not always, or not all. There must be possibilities to set number of free letters (the first two or three) other letters must be paid. Each letter will different cost that must esere agornato real-time window into the cost.