Hello, is it possible to retrieve the OBJID for a chart through the API?

I can get a list of charts using ZOHO_ACTION=DATABASEMETADATA&ZOHO_METADATA=ZOHO_CATALOG_INFO but I would really like to be able to dynamically build the URIs for my charts for embedding in a portal without having to manually extract the URI for each chart.

It would be most useful if the info returned for catalog metadata included in the OBJID for each item.

Thanks,
Ade.