Plot intraday high from bar that moving average crosses above VWAP

The solution depends on what you are doing with that intraday high after the moving average crosses above the VWAP.

"After that I want to stop calculating the intraday high".

So do you just want the plot that displays the intraday high to stop plotting values after this point?

Or do you want to capture the last value of that intraday high and carry if forward for the rest of the trading session?

Once we understand what you want I will provide the solution here. I will also update the title of your question because it's really confusing and has zero chance of showing up in a search for someone trying to find this specification solution.

Edit: The request has been explained in the comment section below. Which is to capture the value of the intraday high at the point the moving average crosses above the VWAP. I really don't like to have posts like this in the forum because the complete code is not provided and nobody else gets to benefit from this solution. We don't provide on-off solutions that only benefit a single person. If you do not wish to publish your code in the forum then you need to submit this as a custom project request. Otherwise, we can provide a solution only after you have provided your fully functional code so that everyone visiting this post in the future is able to make full use of the solution.

Update

Final Edit: The author of the post has provided their fully functioning code in the comment section below. So I now have a solution to this request.

input marketOpen = 930;
input marketClose = 1600;
plot currentVWAP = reference VWAP;
def openCounter = SecondsFromTime(marketOpen);
def closeCounter = SecondsTillTime(marketClose);
def marketHours = if openCounter >= 0 and closeCounter >= 0 then 1 else 0;
plot maOne = MovAvgExponential(close, 15, 0, no);
rec dailyHigh = if (marketHours and maOne < currentVWAP) then if high > dailyHigh[1] then high else dailyHigh[1] else dailyHigh[1];
def beforeExpCross = if (marketHours) then dailyHigh[-1] else Double.NaN;
def newDay = GetDay() <> GetDay()[1];
def crossAbove = maOne[1] < currentVWAP[1] and maOne > currentVWAP;
rec trackHigh = if newDay then beforeExpCross else if crossAbove then Double.NaN else if beforeExpCross > trackHigh[1] then beforeExpCross else trackHigh[1];
plot highBeforeCross = trackHigh;