[amibroker] Using fractional values in StDev

[Gordon]

It appears that if you use a fractional value in StDev:

  WRMA = MA(Med, BBPeriods);

  MyStDev = StDev(WRMA, 0.25);

that the result is zero (0). However, using a fractional value in the Bollinger 
Band formulas works fine. Anyone else see this/experience?

-G