This indicator tracks the market structure by identifying the highest high and lowest low. It then calculates the area of interest by taking the average of these levels. Additionally, it calculates liquidity by dividing the volume by the range between the highest high and lowest low.
Please note that this is a basic example, and you can modify and enhance it according to your specific requirements and trading strategy. Remember to thoroughly backtest and validate any trading strategy or indicator before using it in live trading.