How to add NULL value in UserTable Field?
i.e.
Dim oUserTable As SAPbobsCOM.UserTable
oUserTable= _oCompany.UserTables.Item(TableName)
oUserTable.Code = Code
oUserTable.Name = Code
oUserTable.UserFields.Fields.Item(FieldName1).Value = Value1
oUserTable.UserFields.Fields.Item(FieldName2).Value = Value2
oUserTable.UserFields.Fields.Item(FieldName3).Value = dbnull.value
oUserTable.Add()