double emaH4_now = iMA(NULL, PERIOD_H4, 13, 0, MODE_EMA, PRICE_CLOSE, 0);
double emaH4_prev = iMA(NULL, PERIOD_H4, 13, 0, MODE_EMA, PRICE_CLOSE, 1);
double slopeH4 = emaH4_now - emaH4_prev;
bool isTrendUp = slopeH4 > 0;
bool isTrendDown = slopeH4 < 0;
