mteOwner in Event MIB Notifications

I am working with an implementation of the DISMAN Event MIB.

I get a mteTriggerRising notification with the following attributes:

SysUpTime = 0 hours, 37 minutes, 0 seconds.
Trap OID = .1.3.6.1.2.1.88.2.0.2
.1.3.6.1.2.1.88.2.1.1 = processorLoad
.1.3.6.1.2.1.88.2.1.4 = .1.3.6.1.2.1.25.3.3.1.2.1
.1.3.6.1.2.1.88.2.1.5 = 32

However, there is no instance information provided by the agent  
because the attributes in the VarBind list are scalars rather than  
the tabular data they actually represent.

The question is, how can the manager know the mteOwner for the  
corresponding notifications. It seems like mteTriggerName (which is  
encoded as the mteHotTrigger in the notificatin) only has to be  
locally unique within a specific value of mteOwner. Therefore it is  
possible that I could have foo.x and bar.x as indexes into the  
mteTriggerTable, but when either goes off, the corresponding  
mteHotTrigger would be x with no indication of foo and bar.

So how does the management application know which one it was? Is  
there a reason why the MIB is defined this way to exclude the  
instance information and the mteOwner.

Could I define an entry in the mteObjectsTable t "add" mteOwner as a  
VarBind to the notification? Or is there also some reason I should  
not take this approach.

Any input and assistance in this is greatly appreciated.

Thanks,
Carl