Hello everybody

so, this is our issue. We have our local currency set for our company and USD as second currency in multi-currency options. We have installed a module to have the reversed excange rate  that  work  fine . The dollar is exchanged at 6.97 units in the national currency. So if a product in national currency is bought at 100 and sold at 200, its dollar price is 28.69. We have registered users with the role of sellers who are not allowed to sell below the purchase price. When these users try to sell in dollars  the  product  of  the  example, they get the error "you cannot sell below the purchase price". In reality, the $ 28 is more than the 100 pesos of the purchase, but Odoo seems to be comparing only the numbers without taking the exchange rate. How can this problem be solved? Thank you