Scan for DMI plus crosses DMI minus

It seems so strange to me that I still get questions about how to do these. I have done so many examples of lines crossing other lines that I figure by now you guys should be able to do this in your sleep. Code is listed here and a screenshot to show what it looks like using the Study Alert view.

input length = 14;
input averageType = AverageType.WILDERS;
input threshold = 20;
def hiDiff = high - high[1];
def loDiff = low[1] - low;
def plusDM = if hiDiff > loDiff and hiDiff > 0 then hiDiff else 0;
def minusDM = if loDiff > hiDiff and loDiff > 0 then loDiff else 0;
def ATR = MovingAverage(averageType, TrueRange(high, close, low), length);
def diPlus = 100 * MovingAverage(averageType, plusDM, length) / ATR;
def diMinus = 100 * MovingAverage(averageType, minusDM, length) / ATR;
def DX = if (diPlus + diMinus > 0) then 100 * AbsValue(diPlus - diMinus) / (diPlus + diMinus) else 0;
def diPlusCrossesAbove = diPlus[1] < diMinus[1] and diPlus > diMinus;
def diPlusCrossesBelow = diPlus[1] > diMinus[1] and diPlus < diMinus;
# use this scan to check for DI+ crossing above DI-
plot scan = diPlusCrossesAbove;
# use this scan to check for DI+ crossing below DI-
#plot scan = diPlussCrossesBelow;