為何日K洗價和1K洗價相同金額，獲利不一樣?

腳本如下

//先買後賣

if position=0 and filled=0 and opend(0) > closeD(1) and close<>getField("漲停價", "D") then setposition(1,market,label:="買1");//上漲先買

if position=1 and filled=1 and (close >= filledAvgPrice*1.005 or high >= filledAvgPrice+0.5  ) then setposition (0,close,label:="賣1"); 

//前一日有庫存先賣再買

if position[1]=1 and filled[1]=1 and openD(0) < closeD(1) then  begin 

setposition(0 ,market,label:="賣2");//下跌先賣

if position=1 and filled=1 and (close <= filledAvgPrice*0.995 or close <= filledAvgPrice-0.5)  then

  setposition(1,close,label:="買2");

end

 else

begin

//無庫存先放空再回補

if position=0 and filled=0 and opend(0) < closed(1) then  short(1 ,market,label:="賣3");//下跌先賣

if position=-1 and filled=-1 and (q_bestbid1 <= filledAvgPrice*0.995 or q_bestbid1 <= filledAvgPrice-0.5)  then cover(1,q_bestbid1,label:="買3");

end;