Based on my modeling the indicator « ForcesVariation1» is a "Scales" between the two forces that acting on the price simultaneously by measurihg the relative force of buyers represented by the blue curve (Buyf1) and the relative force of sellers (Sellf1) represented by the red curve. So at each moment you can see, which force is dominant on the price movement allowing you to follow the "good side" , so if the blue curve pass above the red one that’s mean that the buyers take price in theirs side…