Code help: Range of 1st hours trading.

var DH = 0, DL = 0;
if(lhour(UTC) > EndMarket) {
  DH = dayHigh (UTC,0);
  DL = dayLow (UTC,0);
}

function run()
{
	
	set(TICKS+LOGFILE);
	
	BarPeriod = 30;
	LookBack  = 3;
	Hedge = 2;
	
	
	StartDate = 20100101;
//	EndDate   = 20100201;

	asset("UK100");
	
	int marketstarthour		= 8;
	int marketstartminute	= 0;
	int marketendhour			= 16;
	int marketendminute		= 30;
	
	vars hi				= series(priceHigh());
	vars lo				= series(priceLow());
	
	//Find the high low range of first hours trading
	vars enthigh		= series(MaxVal(hi,2)); 
	vars entlow 		= series(MinVal(lo,2));
	vars Range			= series(enthigh[0]-entlow[0]);
	
	

	
	
//	printf("\n%2.0d:%2.0d High %4.1f Low %4.1f enthigh %4.1f entlow %4.1f range %4.1f",hour(),minute(),hi[0],lo[0],enthigh[0],entlow[0],Range[0]);
//	
	
//	if (NumPendingTotal == 1)   // Take only one trade per day OCO one cancels other Not sure if this was part of strategy or not
//	{
//		for(open_trades)
//		{
//			if (TradeIsPending) exitTrade(ThisTrade);
//		}
//	} 
	
		if ((hour() == marketstarthour+1)
				and (minute() == marketstartminute))
		{
			
//			printf("\nenthigh = %4.1f; entlow = %4.1f; Range = %4.1f; PIP = %4.1f",enthigh[0],entlow[0],Range[0],PIP);
//			
			
			if (Range[0] < 40*PIP) 		// Don’t trade if range is higher than 40 points
			{
//				printf("\nRange %4.1f < 40 pips, entering pending trades at enthigh %4.1f & entlow %4.1f,price %4.1f",Range[0],enthigh[0],entlow[0],priceClose());

				EntryTime = 15;											// Expire pending trades at 4:30
				
				enterLong(0,enthigh[0],Range[0],Range[0]);
				enterShort(0,entlow[0],Range[0],Range[0]);		//Buy on the breakout of the lowest low or the highest high of that first hour
			}
			
		}
		
		if (((hour() >= marketendhour)
				and (minute() >= marketendminute)) and (NumOpenTotal > 0))
		{
//			printf("\nExiting Open Trades");
			exitLong();
			exitShort();
		}
}