Creation of NinjaTrader Bot

Hello there, the idea is to have a bot to buy and sell on ninja trader, as the adx crosses(Tradingview)....  the bot will work just one side, I will choose if it is going to only buy or only sell.....  if I choose to buy, the bot buys every time the green crosses up and it will close the trade every time the red crosses back up... and vice versa.  Kindly bid if you're an expert at this only and don't bid if you will later cancel.