Mk_jolokia question

I am using version 1.2.8p26, and the mk_jolokia plugin that was included with that version.

The mk_jolokia plugin only seems to pass default values to CMK. I have successfully added other checks, and they do showup when I run mk_jolokia command line on the remote server. However, the data does not get imported into CMK, and I am not seeing how to make that happen.

For example, below is one of the custom values to be returned by the plugin, but it does not show up in CMK. Is there something that needs to be configured in CMK to grab this value? Any help appreciated.

<<<jolokia_metrics>>>

8080,java.lang:type=OperatingSystem OpenFileDescriptorCount 134