TradingView: Timed range with breakouts

study(title = "The Lark: Timed Range w/ Breakouts", overlay=true)

////// CHANGE THESE FOR YOUR PREFERED OPEN AND CLOSE RANGE //////
Range = "0400-0800"
// MinutesOpen calculates the bars back for hh and ll,
// enter the amount of minutes the range above is.
MinutesOpen = 60 * 4
////////////////////////////////////////////////////////////////

range(res,ses) => time(res, ses) != 0
ors = range("1", Range)
mino = MinutesOpen / interval
hh = ors ? highest(mino) : hh[1]
ll = ors ? lowest(mino) : ll[1]
col1 = close[2] < hh and open > hh and open < close[1] ? #FF00DC : open > hh ? #6ABF23 : white
col2 = close[2] > ll and open < ll and open > close[1] ? #FF00DC : close < ll ? #6ABF23 : white
plot(ors ? na:hh,color=col1,style=circles,linewidth=2)
plot(ors ? na:ll,color=col2,style=circles,linewidth=2)