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This article presents an MQL5 indicator that detects and manages liquidity zone flips. It identifies supply and demand zones from higher timeframes using a base–impulse pattern, applies objective breakout and impulse thresholds, and flips zones automatically when structure changes. The result is a dynamic support‑resistance map that reduces manual redraws and gives you clear, actionable context for signals and retests.

Every trader who relies on support and resistance levels eventually encounters the same recurring challenge. A price level that has repeatedly acted as resistance—often confirmed by long upper wicks or bearish engulfing candles—is suddenly broken by a strong bullish move. The intuitive expectation is that the price will continue to rise, confirming the breakout. However, the market often behaves differently: price returns to the same level and treats it as new support, bouncing upward as though the level has changed its role.

What once acted as a barrier now appears to attract price. For many traders who treat support and resistance as fixed objects on the chart, this behavior can be confusing. In reality, this phenomenon is well known in technical analysis and is commonly referred to as role reversal (zone flip). Check the illustrations below. In Fig. 1, the zone is a demand zone (support), and the indicator has colored it green to represent support. In contrast, Fig. 2 shows that after price breaks below the zone, it begins to act as resistance. At this point, the system automatically transforms it and flips the color to red.

Fig. 1. Before Liquidity Flip

Fig. 2. After Liquidity Flip

Author: Clemence Benjamin