TOS Earnings scan with prior earnings percentage move

The solution to this is complicated by the fact that earnings can be reported after market close or before market open. So our logic needs to have enough dimensions to account for this. It took some effort to get everything balanced and working for both scenarios. I had to plot the various elements on the chart so I could exactly how to construct the code to get the right prices. Some of the screenshots below demonstrate part of that process.

Here is the code for the scan:

Edit: The original code contained math that needed correction. I am replacing that with the code below.
There are a couple more changes.

1) The percentEarningMove is enclosed within AbsValue() method in order to pick up both the positive and negative percent moves
2) A filter was added to prevent picking up stocks that have reported earnings in previous 3 days

rec preEarningsClose = if HasEarnings(EarningTime.BEFORE_MARKET) then close[1] else if HasEarnings(EarningTime.AFTER_MARKET) then close else preEarningsClose[1];
rec postEarningsOpen = if HasEarnings(EarningTime.BEFORE_MARKET)[1] then open[1] else if HasEarnings(EarningTime.AFTER_MARKET)[1] then open else postEarningsOpen[1];
rec percentEarningsMove = if HasEarnings(EarningTime.AFTER_MARKET)[1] then 100 * ( postEarningsOpen / preEarningsClose[1] - 1) else if HasEarnings(EarningTime.BEFORE_MARKET)[1] then 100 * (postEarningsOpen / preEarningsClose - 1) else percentEarningsMove[1];
plot scan = Highest(HasEarnings(), 3) < 1 and AbsValue(percentEarningsMove) > 6.0;