This ProBuilder code snippet demonstrates how to use conditional logic to manipulate data and create a custom screener output based on multiple trading indicators. The example focuses on RSI values and price extremes over a specified period.

// Result hh ll
// 9 9 (no match)
// 1 9
// 9 1
// 1 1
MyRsi = Rsi[14](close)
c1 = MyRsi < 30
hh = (high = highest[20](high))
ll = (low = lowest[20](low))
x = 90
IF hh THEN
  x = 10
ENDIF
IF ll THEN
  x = x + 1
ELSE
  x = x + 9
ENDIF
IF x = 99 THEN
  x = 0
ENDIF
Result = x
IF c1 = 0 THEN
  Result = 0
ENDIF
SCREENER[Result](Result AS "HL")

This code snippet is structured to evaluate certain conditions and adjust a variable accordingly, which is then used to filter results in a screener. Here's a breakdown of its functionality:

• RSI Calculation: The relative strength index (RSI) is calculated over a 14-period window using closing prices.
• Condition Check: It checks if the RSI is less than 30, which typically indicates an oversold condition.
• Price Extremes: Variables hh and ll are used to check if the current high is the highest in the last 20 periods, and if the current low is the lowest, respectively.
• Variable Manipulation: The variable x starts at 90. If the highest high condition (hh) is true, x is set to 10. Depending on whether the lowest low condition (ll) is true, x is adjusted by adding either 1 or 9.
• Final Adjustment: If x equals 99 after adjustments, it is reset to 0.
• Result Assignment: The final value of x is assigned to Result. If the initial RSI condition (c1) is not met (i.e., RSI is not less than 30), Result is set to 0.
• Screener Output: The screener function is used to display the Result with a label "HL". This output can help in identifying specific conditions in trading data.

This example is useful for understanding how to combine multiple conditions and outputs in a screener using ProBuilder's programming capabilities.