I´m trying to create a spreadsheet to manage a business, in particular I want to use it to register the sales of the day. The problem i´m having in particular is that I need it to copy the price of the product sold from the prices sheet, to the sales sheet, but I need that value to remain the same even if later I modified the price.
I have managed to copy the value of the corresponding product, but whenever I update the price, the old sales change to. To put it simple I need a script that whenever a cell from column "Product" in the sheet "Sales" is modified, applies a formula that searches in column "Products" (from sheet Products, within the same spreadsheet) for the corresponding product name, and then copies the value column "prices" from the sheet Products, to sales.
So when I need to change the prices, my old sales retain their original value. I have limited experience with scripts, I tried to make one with OnEdit, but can't make it work.
This is the document in question: https://docs.google.com/spreadsheets/d/18GHXoF9q8qe57o2YrKzLxCH9HlNV9SpF9fXYNPKq2N4/edit#gid=622868548