BarsWhileTrue returns the number of bars that a given condition is true.

I can use the Zorro functions NumDn and NumUp as templates to create my own BarsWhileTrue test.

// return the number of falling bars
int NumDn(var* Data,int Period,var vThreshold)

// return the number of rising bars
int NumUp(var* Data,int Period,var vThreshold)

Zorro's Lowest Low (LL) and HighestHigh (HH) functions accept Period and Offset as parameters. These should provide the variable periodicity my Stochastic formula needs.