cnbcsucks,

the code I posted below tracks the high and low within your time window and updates the plots to higher highs and lower lows. If you want to see a horizontal line at the highest high/lowest low you might want to use trendlines instead of plots and update the trendline with a change in your tracking variable.

Based on your screenshot I can't tell which code you are using exactly.

Regards,

ABCTG

cnbcsucks 

ABCTG, Thank you for replying. I tried the EL code on a 5 minute chart for SPY. Is it a formatting issue or is the code plotting highs/lows on each 5 minute bar from 5 - 6:30am? Please see posted chart. Possible to plot the low and high across the entire 5 - 6:30am pre-market window as drawn manually on chart with white line? spy

cnbcsucks,

I just tested the below code again and it does not update the variables with every bar here, but only on bars that make a higher high or lower low.

 

Code

Variables: bool doReset ( false ), double preMarketHigh ( -999999 ), double preMarketLow ( +999999 ); if Date <> Date[1] then //set flag on date change doReset = true ; If time > 0830 and time < 0930 then begin //reset the tracking values at the beginning of bracket if doReset then begin doReset = false ; preMarketHigh = High ; preMarketLow = Low ; End ; //keep track of higher highs and lower lows If High > preMarketHigh then preMarketHigh = High ; If Low < preMarketLow then preMarketLow = Low ; End ; If preMarketHigh <> -999999 then Plot1( preMarketHigh , "Premarkethigh" ) ; If preMarketLow <> +999999 then Plot2( preMarketLow, "PreMarketLow" ) ;

Regards,

ABCTG