开仓函数正常，平仓执行无效

positions=0.01*(Portfolio_CurrentCapital() + Portfolio_UsedMargin())*pos/(sl*lev); Position pos; A_GetPosition(pos, "", 0); if (sl!=0 and SpeLimit!=0 and dir!=0 and lev!=0){ if (dir==1 and pos.longCurrentVolume==0 and close>SpeLimit and close[1]<=SpeLimit and SumDC>stdev){ CurPos=pos.longCurrentVolume; TRes=Buy(positions,0); Alert("Buy - "+IIFString(TRes, "True", "False")+" - "+Text(CurPos)+" - "+Text(pos.longCurrentVolume)); } else if (pos.longCurrentVolume>0 and close<SpeLimit and close[1]>=SpeLimit and SumDC>stdev){ CurPos=pos.longCurrentVolume; TRes=Sell(pos.longCurrentVolume,0); Alert("Sell - "+IIFString(TRes, "True", "False")+" - "+Text(CurPos)+" - "+Text(pos.longCurrentVolume)); } else if (dir==-1 and pos.shortCurrentVolume==0 and close<SpeLimit and close[1]>=SpeLimit and SumDC>stdev){ CurPos=pos.shortCurrentVolume; TRes=SellShort(positions,0); Alert("SellShort - "+IIFString(TRes, "True", "False")+" - "+Text(CurPos)+" - "+Text(pos.shortCurrentVolume)); } else if(pos.shortCurrentVolume>0 and close>SpeLimit and close[1]<=SpeLimit and SumDC>stdev){ CurPos=pos.shortCurrentVolume; TRes=BuyToCover(pos.shortCurrentVolume,0); Alert("BuyToCover - "+IIFString(TRes, "True", "False")+" - "+Text(CurPos)+" - "+Text(pos.shortCurrentVolume)); } }日志显示BuyToCover触发了并且返回了True，而且正确获得了要平的数量，但是仓位仍然在。