@CalcMgrExcelNPER
Purpose:
Returns the number of periods for an investment
Syntax:
Java Class: com.hyperion.calcmgr.common.excel.cdf.ExcelFinancialFunctions.NPER(double,double,double,double,double)
CDF Spec: @CalcMgrExcelNPER(rate, pmt, pv, fv, type)