This indicator is based on ema cross-over (12,26). In Thailand, the ema 12,26 Cross over is well known as the CDC-ACTION ZONE indicator. . The definition of a bullish trend in this indicator is when the fast ema crosses up the slow ema . The definition of a bearish trend is when the fast ema crosses down the slow ema . . When fast ema is over slow ema the column will show in a green column and when fast ema is below slow ema the column will show in a red column. . I have made this indicator for use with CDC-ACTION ZONE.