A Variant type of any numeric value specifying the OraIntervalYM object as the total number of years.
Dim oraIYM as OraIntervalYM
'Create an OraIntervalYM using a string which represents 1 year and 6 months
Set oraIYM = oo4oSession.CreateOraIntervalYM("1-6")
'totalYears is set to 1.5 which represents an interval of 1.5 years
totalYears = oraIYM.TotalYears