Wait for a Blue Arrow/Signal to appear. Ensure the price is trading above a long-term Moving Average (like the 200 EMA) to ensure you are trading with the primary trend.
Like all trading tools, the Xhmaster Formula has specific strengths and weaknesses that traders must understand.
The Problem: Some versions of the XhMaster (especially free downloads) are "repainting"—meaning the last bar changes color after it closes. The Solution: Purchase the official version from a verified developer or test the indicator on a demo account for 2 weeks. If the "Signal" line on the last closed candle changes after 3 candles, do not use it.