Make a button LONG / SHORT on GRID with SPOT Account#439

In Binance the Users have taxes discount to do trades with FDUSD pair. This pair is not possible to do business in Margin or Futures tradings. I wanna do GRID only LONG using XPR/FDUSD pairs in my spot account, but its not possible in the bot. When I write the maximum range price higher than current price, the GRID automatically do SHORT operations when the price will go to higher prices than the actual price. But I only do trades in LONG positions, because I don´t wanna go against the main crypto. Please include the button LONG and SHORT.