boolean flag=true;

 if(flag){ 

        if((iMA (_Symbol,TF2,35,0,MODE_EMA,PRICE_OPEN)> iMA (_Symbol,TF2,55,0,MODE_EMA,PRICE_OPEN))

            && (iMA (_Symbol,TF1,50,0,MODE_EMA,PRICE_CLOSE)> iMA (_Symbol,TF1,55,0,MODE_EMA,PRICE_OPEN))

            && (iMA (_Symbol,TF,35,0,MODE_EMA,PRICE_CLOSE)> iMA (_Symbol,TF,50,0,MODE_EMA,PRICE_OPEN)))

               {      

               rule=1;                

               flag=false;

               if(PositionsTotal()==0) OrderEntry(ORDER_TYPE_BUY,4);

                    }     


 switch(rule) {
            
            case 1:
             if((iMA (_Symbol,TF,35,0,MODE_EMA,PRICE_CLOSE)>  iMA (_Symbol,TF,55,0,MODE_EMA,PRICE_OPEN)))
                  {
                    flag=true;
                    MqlTradeRequest request={0};
               MqlTradeResult  result={0};
               //--- parameters of request
               if(PositionsTotal()==0) OrderEntry(ORDER_TYPE_SELL,4);
                  }
                  break;                  
            
             default: break;
          
           }    




void OrderEntry(ENUM_ORDER_TYPE order_type,int pos_volume)
{


if(order_type==ORDER_TYPE_BUY) pos_price=SymbolInfoDouble(Symbol(),SYMBOL_ASK);
if(order_type==ORDER_TYPE_SELL) pos_price=SymbolInfoDouble(Symbol(),SYMBOL_BID);
//--- declare and initialize the trade request and result of trade request
   MqlTradeRequest request={0};
   MqlTradeResult  result={0};
//--- parameters of request
ZeroMemory(request);
   ZeroMemory(result);
   request.action   =TRADE_ACTION_DEAL;                     // type of trade operation
   request.symbol   =Symbol();                              // symbol
   request.volume   =pos_volume;                                   // volume of 0.1 lot
   request.type     =order_type;                        // order type
   request.price    =pos_price; // price for opening
   request.deviation=5;                                     // allowed deviation from the price
   request.magic    =EXPERT_MAGIC;                          // MagicNumber of the order
//--- send the request
   if(!OrderSend(request,result))
      PrintFormat("OrderSend error %d",GetLastError());     // if unable to send the request, output the error code
//--- information about the operation