How to plot line only for first 30 mins i.e 9:00 to 9:30 AM

[fxshrat]

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@jeez

I wanna plot an line time based i.e from 9:00 to 9:30 AM , how to do it .

tn = TimeNum();
timeWindow = tn >= 090000 AND tn < 093000;
timeWindow_start = timeWindow != Ref(timeWindow,-1);

myLine = ValueWhen(timeWindow_start, Open );// or whatever is your line
myLine = IIf( timeWindow, myLine, Null );// plot line only if timeWindow is true

Plot( C, "Price", colorDefault, styleBar );
Plot(myline ,"myline",colorGreen,styleLine);