made the changes accordingly ...

Code
       var BreakEvenLongTrigger, LosingLongLevel;

       BreakEvenLongTrigger = TradePriceOpen + Range * 0.5;
       LosingLongLevel = TradePriceOpen - Range * 0.4;

        var hconfig_1[5];
	hconfig_1[0] = 0; // always 0
	hconfig_1[1] = BreakEvenLongTrigger; // price position
	hconfig_1[2] = GREEN; // line color
	hconfig_1[3] = 1; // line width
	hconfig_1[4] = LINE; // line style
	
	var hconfig_2[5];
	hconfig_2[0] = 0; // always 0
	hconfig_2[1] = LosingLongLevel; // price position
	hconfig_2[2] = ORANGE; // line color
	hconfig_2[3] = 1; // line width
	hconfig_2[4] = LINE; // line style

        brokerCommand(PLOT_HLINE, hconfig_1);
	brokerCommand(PLOT_HLINE, hconfig_2);


no compiler errors so far ... Thank you.
Testing now and will check if plots appear on mt4 chart ...