ライブラリ開発の注文 - 新規

I currently have unfinished work. It’s a project to connect MetaTrader with the BingX platform. At the moment, I have implemented a service that retrieves a custom symbol in BingX, and it works well. However, some specifications still need to be adjusted regarding how the data is received. Otherwise, prices and other values are accurate. The only issue is that for the strategy tester, it is always necessary to