Has there been a resolution for this?
I am runnig into a similar issue where the 'Name' Table doesn't exist or is not supported in the polled MIB tree. I am polling a table with multiple values responding, each representing a different 'channel'. I have acquired the individual 'channel' names manually but am only able to add a single entry into the custom label field.
I may have a work around for this if you are running NPM ver 10 or above which would involve using the new feature that allows multiple UnDP's on a single graph. I am unable to try this at the moment as I'm experiencing a bug which prevents me from accessing this feature.
As a very low-tech and quick work around I have used the 'SubTitle #2' text box as a legend to describe what each number represents. This text box is accessed in the chart 'EDIT' option within the website. Note: This can potentially give rise to additional complications if the amount/names of the returned values differ per device polled by the UnDP.