問題是：如何想找最近第一次轉為綠柱當天；再取得當天的布林通道寬度

//MACD
input: FastLength(12), SlowLength(26), MACDLength(9);
variable: difValue(0), macdValue(0), oscValue(0);
SetTotalBar((maxlist(FastLength,SlowLength,6) + MACDLength) * 4);
SetInputName(1, "DIF短期期數");
SetInputName(2, "DIF長期期數");
SetInputName(3, "MACD期數");
MACD(weightedclose(), FastLength, SlowLength, MACDLength, difValue, macdValue, oscValue);

//布林通道
input: Length(20), UpperBand(2), LowerBand(2), EMALength(3);
variable: up(0), down(0), mid(0), bbandwidth(0), ema(0);
SetInputName(1, "天數");
SetInputName(2, "上");
SetInputName(3, "下");
SetInputName(4, "EMA");
up = bollingerband(Close, Length, UpperBand);
down = bollingerband(Close, Length, -1 * LowerBand);
mid = (up + down) / 2;
bbandwidth = 100 * (up - down) / mid;
ema = XAverage(bbandwidth, EMALength);

value7 = BarsLast(difValue Crosses Below macdValue);   // 1. 先找最近一次的第一支dif轉為綠柱為A日
value8=((up-down),value7);//2.想取得A日當天的上下布林通道寬度
IF close cross Over up //收盤穿過上軌
And close > highest (high[1],3) //收盤高於三天的高點
and close > open
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以上編緝在value8就出現錯誤：
34行號18字元在 "," 之前可能少了")", "DOWNTO", "TO", "OR", "XOR", "AND", "=", "<>", "<", ">", "<=", ">=", "Crosses Above", "Crosses Over", "Crosses Below", "Crosses Under", "+", "-", "*", "/"。