回測資料抓取有誤

系統的函數EMA會用所有資料計算。計算OSC，建議使用系統提供的MACD函數。

input: 
    SignalSymbol("FITXN*1.TF", "訊號來源商品(大台全)"), 
    FastLen(8, "MACD快線"), 
    SlowLen(21, "MACD慢線"),
    MacdLen(5, "MACD柱狀點");
variable: sOpen(0), sClose(0), sHigh(0), sLow(0), sVolume(0); 
variable: difValue(0), macdValue(0), osiValue(0); 
var: negCount(0); 
var: posCount(0); 
variable: cond1(false), cond2(false); 
variable: condS1(false), condS2(false); 
variable: LongSignal(false), ShortSignal(false); 
var: WClose(0); 

sOpen = GetSymbolField(SignalSymbol, "Open"); 
sClose = GetSymbolField(SignalSymbol, "Close"); 
sHigh = GetSymbolField(SignalSymbol, "High"); 
sLow = GetSymbolField(SignalSymbol, "Low"); 
sVolume = GetSymbolField(SignalSymbol, "Volume"); 

WClose=(sHigh+sLow+2*sClose)/4;
macd(WClose,FastLen,SlowLen,MacdLen, difValue, macdValue, osiValue);

if osiValue < 0 then begin 
    negCount += 1; posCount = 0; 
end else if osiValue > 0 then begin 
    posCount += 1; negCount = 0; 
end else begin 
    negCount = 0; posCount = 0; 
end; 
cond1 =  
cond2 = 
LongSignal = (cond1 or cond2); 
condS1 =
condS2 =
ShortSignal = (condS1 or condS2 ); 

if LongSignal then begin
    SetPosition(1, Market);
end 
else if ShortSignal then begin
    SetPosition(-1, Market);
end;
print(datetime, osiValue);