Indicator: 30min breakouts per 30min period

Draws a new Breakout Support and resistance every 30minutes.
Buy and sell accordingly to the chart.

input : setTime(30);
var : Hval(0), Lval(0), preHval(0), preLval(0);

var1 = TimeToMinutes(stime);
var2 = mod(var1,setTime);

if var2 == 0 then {
Hval = H;
Lval = L;
preHval = Hval[1];
preLval = Lval[1];
}
if var2 <> 0 then {
if H > Hval Then
Hval = H;
if L < Lval Then
Lval = L;
}

plot1(preHval,"High"Red);
lot2(preLval,"Low",blue);