请问这样写上涨趋势下跌趋势语法上有错误吗?

Params

Numeric ATRLength(14); //周期

Vars

Series<Numeric> GD;

Series<Numeric> DD;

   Series<Numeric> ATR(0);  // 声明序列变量ATR

   Series<Bool> LLH;

   Series<Bool> HHH;

   Series<Bool> HHL;

   Series<Bool> LLL;

   Series<Bool> SZQS;

   Series<Bool> XDQS;

Events

OnBar(ArrayRef<Integer> indexs)

{    

   ATR =  AvgTrueRange(ATRLength);

       If ( Close[1] > Close[2] && Close[2] < Close[3] )

       {

           DD = Close[2];

       }    

       If ( Close[1] < Close[2] && Close[2] > Close[3] )

       {

               GD = Close[2];  

       }  

LLH = DD[1] > DD[2];

HHH = GD[1] > GD[2];

HHL = GD[1] < GD[2];

LLL = DD[1] < DD[2];

SZQS = LLH && HHH;

XDQS = HHL && LLL;