great, but dealing with an issue

We recently started monitoring all of our UPS’s so this was extremely useful and the setup is fast and easy, BUT the only problem I have is if I have a host that has multiple UPS’s and they’re on different ports I am getting a null response. If i execute the same command from console i get a good response. Any suggestions? I have tried making separate services, putting them all on one host,tried adding the port option to the plugin, still nothing works.