Remarks
The result of the operation is stored in the OraIntervalYM object, overwriting any previous value. There is no return value.
If operand is a Variant of type String, it must be in the following format: [+/-]YEARS-MONTHS.
If operand is a numeric value, the value provided should represent the total number of years that the constructed OraIntervalYM object represents.
Examples
Dim oraIYM as OraIntervalYM
'Create an OraIntervalYM using a string which represents 1 year and 6 months
Set oraIYM = oo4oSession.CreateOraIntervalYM("1-6")
'Add an interval using a string, which represents 2 years
'and 6 months, to oraIYM.
'The resulting oraIYM is an interval which represents 4 years
oraIYM.Add "2-6"
