請問有關執行語法變數問題

請問小編

錯誤描述為：在 ">" 之前可能少了"(", "*=", "/=", "[", "+=", "=", "-=", ";", "ELSE"。　

如下執行語法：為何執行會出現錯誤? 　找不出原因，求救，謝謝。

var:_open_v(0);

if barfreq <> "Min" and barfreq <> "D" and barfreq <> "AD" then raiseruntimeerror("僅支援分鐘與日頻率（含還原）");

if time=090000 then _open_v=v;

if isSessionFirstBar then begin

   value1 = high;

   value2 = volume;

   value3 = date;

   end;

if high > value1 then begin

   value1 = high;

   value2 = volume;

   value3 = date;

   end;

if value1 > value1[1] then 

   value2 > value2[1]

   else 

   value2 < value2[1];

if value3 = value3[1]

   and _open_v <> 0

   then ret=1;