2 risposte

I just saw your question but thought I could answer. You can use the DatedConversionRate object. Supported calls are:
delete()
describeSObjects()
getDeleted()
getUpdated()
query()
retrieve()
update()
This object is not available in single-currency organizations, nor is it available if the organization does not have advanced currency management enabled.
See: http://www.salesforce.com/us/developer/docs/api/Content/sforce_api_objects_datedconversionrate.htm