Here's another.
Code:
function run() {
  if (is(INITRUN)) {
    BarPeriod = 60;
    BarOffset = 57;
    Weekend = 1;
    LookBack = 406;
    StartDate = 20080101;
    EndDate = 20150301;
    NumWFOCycles = 169;
  }

  var rvi405 = RVI(405);
  if (Bar == 41712) {
    print(
      TO_ANY,
      strf("\nAt bar %d in Cycle %d RVI405=%f.", Bar, WFOCycle, rvi405));
  }
}

Train prints
Quote:

wfobug compiling.................
WFO: wfobug 2008..2015
At bar 41712 in Cycle 158 RVI405=-0.090028.
At bar 41712 in Cycle 159 RVI405=-0.090028.
At bar 41712 in Cycle 160 RVI405=-0.090028.
At bar 41712 in Cycle 161 RVI405=-0.090028.
At bar 41712 in Cycle 162 RVI405=-0.090028.
At bar 41712 in Cycle 163 RVI405=-0.090028.
At bar 41712 in Cycle 164 RVI405=-0.069675.
At bar 41712 in Cycle 165 RVI405=-0.763646.
Time 00:00:02