I would like to display the range (High-Low) of the first bar of the trading day
on a 5 minute TOS chart. I would also like to add a user option to display the range
of the first 3 bars of the trading day as an alternative if it's possible. I know how to
display the result, I just need to know what script to use to identify the range for the
first bar or first 3 bars. I appreciate any suggestions.

sat1234 

I would like to display the range (High-Low) of the first bar of the trading day on a 5 minute TOS chart. I would also like to add a user option to display the range of the first 3 bars of the trading day as an alternative if it's possible. I know how to display the result, I just need to know what script to use to identify the range for the first bar or first 3 bars. I appreciate any suggestions.

def na=double.nan;
input ORBegin = 0930;
input OREnd = 0935;
input ShowTodayOnly={"No", default "Yes"};
def s=ShowTodayOnly;
Def ORActive = if secondstilltime(OREnd)>0 AND secondsfromtime(ORBegin)>=0 then 1 else 0;
def today=if s==0 OR getday()==getlastday() AND secondsfromtime(ORBegin)>=0 then 1 else 0;
Rec ORHigh = if ORHigh[1]==0 or ORActive[1]==0 AND ORActive==1 then high else if ORActive AND high>ORHigh[1] then high else ORHigh[1];
Rec ORLow = if ORLow [1] ==0 or ORActive [1] ==0 AND ORActive ==1 then low else if ORActive AND low < orlow [1] then low else ORLow [1];
Def ORWidth = ORHigh - ORLow;
Plot ORH=if ORActive OR today<1 then na else ORHigh;
Plot ORL=if ORActive OR today<1 then na else ORLow;
ORH.setdefaultcolor(color.green);
ORH.setStyle(Curve.FIRM);
ORH.setlineweight(3);
ORL.setdefaultcolor(color.red);
ORL.setStyle(Curve.FIRM);
ORL.setlineweight(3);