Reference OperationInstanceID in Custom Query on IPSLA Operation details page

Hi,

I'm trying to use the Custom Query resource on an the IPSLA details page to provide further info about an IPSLA operation.

To do so, I need to pass the OperationInstanceID being displayed on the current details page to the query... the same kind of thing as when you reference ${NodeID} on a node details page.

I've tried referencing ${OperationInstanceID} but it doesnt work.  Any ideas, or is this just not supported for IPSLA operations?