PINESCRIPT的MACD程式 如何改寫成XQ的語法??

原始的TradingView Pine Script MACD程式碼如下：

fastMA_a = input.int(title="快速移動平均線", defval = 12, minval = 4)

slowMA_a = input.int(title="慢速移動平均線", defval = 26, minval = 4)

[currMacd_a, _, _] = ta.macd(close[0], fastMA_a, slowMA_a, 9)

[prevMacd_a, _, _] = ta.macd(close[1], fastMA_a, slowMA_a, 9)

a = currMacd_a > prevMacd_a ? #ff00b3 : #00FF00

將其改寫為以下的 XQ語法 :

input: FastLength(12, SlowLength(26), MACDLength(9);

variable: DIF(0);

DIF = XAverage(Close, FastLength) - XAverage(Close, SlowLength);

Condition1 = DIF > DIF[1];

跑出來 並不正確!!

currMacd_a   prevMacd_a  並不是對應到  DIF  DIF[1]

請問 正確的XQ語法 應該如何寫?? 先謝謝!!