主题：[求助下面程序哪里有问题，为什么说else前缺少if

INPUT: PercentOfRange(0.3,0,1,0.1),MinRange(0.2,0,1.0.1),StopLossSet(0.5,0,1,0.1),
       TrailingStart(0.8,0,1,0.1),TrailingStop(0.5,0,1,0.1),
       ExitOnCloseMins(145000,140000,150000,100);
VARIABLE:blongStoped=false,bshortStoped=false,predayhigh:=0,predayrange=0,
         predaylow:=0, higherAfterEntry:=0,lowerAfterEntry:=0,myprice=0,dayopen=0；

 N1:=BARSLAST(DATE<>REF(DATE,1))+1;
 N2:=REF(N1,N1);
 PreDayHigh:=REF(HHV(HIGH,N2),N1);
 PreDayLow:=REF(LLV(LOW,N2),N1);

 if date<>ref(date,1) then begin
 dayopen:=open;  //dayopen取当天的开盘价//
 predayrange:=predayhigh-predaylow;
 brange:=open*minrange*0.01;
 if predayrange<brange then
  predayrange:=brange;
end  else begin
 dayopen:=ref(dayopen,1);
 predayrange:=ref(predayrange,1);
 blongstoped:=ref(blongstoped,1);
 bshortstoped:=ref(bshortstoped,1);

end

该程序显示ref函数在逐周期模式下不能再if控制语句中使用

但是把ref语句提到外面：

INPUT: PercentOfRange(0.3,0,1,0.1),MinRange(0.2,0,1.0.1),StopLossSet(0.5,0,1,0.1),
       TrailingStart(0.8,0,1,0.1),TrailingStop(0.5,0,1,0.1),
       ExitOnCloseMins(145000,140000,150000,100);
VARIABLE:blongStoped=false,bshortStoped=false,predayhigh:=0,predayrange=0,
         predaylow:=0, higherAfterEntry:=0,lowerAfterEntry:=0,myprice=0,dayopen=0,p1=0,b1=0,b2=0,h1=0,h2=0,l1=0,l2=0;
  N1:=BARSLAST(DATE<>REF(DATE,1))+1;
 N2:=REF(N1,N1);
 PreDayHigh:=REF(HHV(HIGH,N2),N1);
 PreDayLow:=REF(LLV(LOW,N2),N1);//跨周期取昨日的最高价与最低价//
 d1:=ref(dayopen,1);
 p1:=ref(predayrange,1);
 b1:=ref(blongstoped,1);
 b2:=ref(bshortstoped,1);
  if date<>ref(date,1) then begin
 dayopen:=open;  //dayopen取当天的开盘价//
 predayrange:=predayhigh-predaylow;
 brange:=open*minrange*0.01;
 if predayrange<brange then
  predayrange:=brange;
end  else begin
 dayopen:=d1;
 predayrange:=p1;
 blongstoped:=b1;
 bshortstoped:=b2;

end

测试正常，但调试dayopen等值都有问题，是怎么回事呢？