If this leg is amortised, it returns the number of amortised periods.

The XPath query which can also be passed to the FpMLGenericQuery() function to generate the same result is : count(//descendant::swap/swapStream[LegNo]/calculationPeriodAmount[1]/calculation[1]/notionalSchedule[1]/notionalStepSchedule[1]/step).

This function requires the input of a FpMLDoc object key, which must have been produced via a call to the ReadFpML() function.

This function would have returned a string 'KEY' which is to be passed to the 'FpMLDocKey' parameter of this function.

If you were looking at the FpML document, a typical example of walking to this(these) node(s) would be...

  // FpML Document -> IsOrAreNodesPresent(

    -> swap

      -> swapStream[LegNo]

        -> calculationPeriodAmount[1]

          -> calculation[1]

            -> notionalSchedule[1]

              -> notionalStepSchedule[1]

                -> step)

Or if using the FpMLGenericQuery() function...

count(//descendant::swap/swapStream[LegNo]/calculationPeriodAmount[1]/calculation[1]/notionalSchedule[1]/notionalStepSchedule[1]/step)

Long CTFpMLSW.NoOfAmotisedPeriods( _
String FpMLDocKey, _
Long LegNo)

=CT.FpML.SW.NoOfAmotisedPeriods(
Excel String Cell FpMLDocKey,
Excel Numeric Cell LegNo)

static long NoOfAmotisedPeriods(
std::string FpMLDocKey,
long LegNo);

System.Int32 CTFpMLSWSA.NoOfAmotisedPeriods(
System.String FpMLDocKey,
System.Int32 LegNo);