Thanks for reposting this. That question title is much more useful for others searching for a solution.
You did not provide a screenshot. So I cannot see everything I need in order replicate this on my side. However I see a potential problem in the way you are describing your start time and end time values. And based on this I can come to two different conclusions.
One is that you are trying to use this in a way that is not supported by it’s design.
Two is that you do not understand how those start and end times are used.
Having carefully viewed the demo video from start to finish should have eliminated either of these two possibilities. So I am left to assume you skimmed through the video, or missed some very important details.
So let me try to set things straight. This indicator measures the extended hours high and low. It does this at the very core. Your start time and end times have absolutely no impact on this behavior. The code measures the overnight high and low, period. That is its very core.
The start and end times ONLY apply to the yellow shaded area that constitutes the “Alert Zone”. Which is the time span during which the alerts will trigger. The Alert Zone, must be contained within the Regular trading hours. The start time cannot be sooner than 9:30 am ET and the end time cannot be later than 4:00 pm ET. Period.
So now the question is this. Given the clear description of all this in the demo video. Why on earth are you trying to set the start time to 1600 and the end time to 930? Is it One, or is it Two?
So it does get the highest and lowest for the period. But not for the previous day.
As stated previously. There is no purpose to setting the time outside of 930 start and 1600 end. It changes absolutely nothing about how the overnight high and low are computed. For futures, the overnight high and low include the previous day’s after hours session. For stocks, it does not. There is no way around this problem as the issue is integral to Thinkorswim and the way they are defining the sessions.
Sorry sir, I finally understood it. Newbies … Fantastic study!
Feel free to delete this thread. If you don’t, just a couple of words about my struggle. The green line is when the market goes higher than the highest point of the premarket. The red is when it goes lower than the lowest during the night.
The Fibonacci thing is my next. Stop.