Gap Downside Tasuki Automating Finding Script

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//  Copyright by HPotter v1.0 21/10/2014
//    This is a Downside Tasuki gap pattern. 
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study(title = "Downside Tasuki gap", overlay = true)
barcolor(high < low[2] and high[1] < low[2] and close < open and close[1] < open[1] and  close[2] < open[2] ? yellow :na)
barcolor(high < low[2] and high[1] < low[2] and close < open and close[1] < open[1] and  close[2] < open[2] ? yellow :na, -1)