Watchlist or scan of how many candles are above span A

Ok now we have some clarification we can proceed. Each post on this Q&A forum is intended to serve the widest possible audience. So while you have reduced your request to something much less complex, the context of the question will lead viewers to expect the full solution.

The first item we must face is the historical data limitation when working with custom watchlists and scans in Thinkorswim. Found at the very bottom of this page: http://toslc.thinkorswim.com/center/howToTos/thinkManual/Scan/Stock-Hacker/studyfilters.html

For the 30 min time frame we have only 15 calendar days of historical data available to us. This includes weekends so we don’t even have all 15 days. So we have to accept this limit before we start using this code.

The request was for counting the number of candles above Span A. But when the cloud is bearish, Span A is below Span B and this could leave you with candles being counted which are actually inside the cloud. So my solution here is for candles above the cloud, period. So we test if the close is above Span A and we test if the close is above Span B. Both must be true in order for a candle to be counted.

Here is the code. Screenshot below shows the result.

input tenkan_period = 9;
input kijun_period = 26;
def tenkan = (Highest(high, tenkan_period) + Lowest(low, tenkan_period)) / 2;
def kijun = (Highest(high, kijun_period) + Lowest(low, kijun_period)) / 2;
def spanA = (tenkan[kijun_period] + kijun[kijun_period]) / 2;
def spanB = (Highest(high[kijun_period], 2 * kijun_period) + Lowest(low[kijun_period], 2 * kijun_period)) / 2;
def aboveCloud = close > spanA and close > spanB;
rec counter = if aboveCloud and !aboveCloud then 1 else if aboveCloud then counter[1] + 1 else 0;
plot data = counter;