Plot Shift Issue

以下指標腳本用在任意股票標的，print 出來的 PeakBar 及 PeakPrice 皆正確，但用 Plot Shift 在K線圖畫出來的位置及值卻皆不正確。

請問是何原因? 如何排除?

謝謝解惑!

var: _peak_bar(0), _peak_price(0);

 

_peak_bar = SwingHighBar(High, 50, 5, 5, 2);

 

if _peak_bar>0 then _peak_price = High[_peak_bar];

print(file("D:\Output.txt"),datetostring(date),

"CurrBar",currentbar,"PeakBar",_peak_bar,"PeakPrice",_peak_price,

"PeakDate",datetostring(iff(_peak_bar>0,date[_peak_bar],0)));

 

if _peak_bar<currentbar and _peak_bar>0 and _peak_bar<>_peak_bar[1]+1 then begin

Plot1(_peak_price, "Peak",shift:=-_peak_bar);

 

print(file("D:\Output.txt"),datetostring(date),

"PeakBarPlot",currentbar,"PeakBar",_peak_bar,"PeakPrice",_peak_price,

"PeakDate",datetostring(iff(_peak_bar>0,date[_peak_bar],0)));

end;