This code snippet demonstrates how to create a “Force” indicator using Bollinger Bands in the ProBuilder programming language. The indicator assigns a force value based on the position of the close price relative to multiple levels of Bollinger Bands.

// CLOSE > BOLLUP
i1= close > Average[t1](close) + 1*std[t1](close)
i2= close > Average[t1](close) + 1.5*std[t1](close)
i3= close > Average[t1](close) + 2*std[t1](close)
i4= close > Average[t1](close) + 2.5*std[t1](close)
i5= close > Average[t1](close) + 3*std[t1](close)

// CLOSE < BOLLDOWN
y1= close < Average[t1](close) - 1*std[t1](close)
y2= close < Average[t1](close) - 1.5*std[t1](close)
y3= close < Average[t1](close) - 2*std[t1](close)
y4= close < Average[t1](close) - 2.5*std[t1](close)
y5= close < Average[t1](close) - 3*std[t1](close)

if i1 and i2 and i3 and i4 and i5 then 
force = 5 
endif
if i1 and i2 and i3 and i4 and (not i5) then 
force = 4 
endif
if i1 and i2 and i3 and (not i4 and not i5) then 
force = 3 
endif
if i1 and i2 and (not i3 and not i4 and not i5) then 
force = 2 
endif
if i1 and (not i2 and not i3 and not i4 and not i5) then 
force = 1 
endif
if (not i1 and not i2 and not i3 and not i3 and not i4 and not i5 and not y1 and not y2 and not y3 and not y4 and not y5) then 
force = 0 
endif
if y1 and y2 and y3 and y4 and y5 then 
force =-5 
endif
if y1 and y2 and y3 and y4 and (not y5) then 
force =-4 
endif
if y1 and y2 and y3 and (not y5 and not y4) then 
force =-3 
endif
if y1 and y2 and (not y5 and not y4 and not y3) then 
force =-2 
endif
if y1 and (not y5 and not y4 and not y3 and not y2) then 
force =-1 
endif

return force
//Set T1 to 20 or whatever u want.

This code calculates a “force” value based on the relationship between the closing price and multiple Bollinger Bands thresholds:

• Variables i1 to i5 are defined to check if the close price is above increasing multiples of the standard deviation above the moving average.
• Variables y1 to y5 check if the close price is below decreasing multiples of the standard deviation below the moving average.
• The force variable is then assigned a value from -5 to 5 based on which conditions are met. Positive values indicate the close is above the upper Bollinger Bands, and negative values indicate it is below the lower Bollinger Bands.
• The return statement outputs the force value, which can be used as an indicator of the strength of the current price movement relative to the volatility represented by the Bollinger Bands.

This indicator can be useful for traders looking to gauge the strength of price movements or as part of a larger trading strategy.