I problem when monitoring pfsense

Hi!! I have installed the cacti and it works very well. It monitoring 
some machines and routers and it works correctly. I had a problem with 
pfsense, I monitoring the process, memory usage, traffic interfaces and 
ping latency very well but I tried monitoring the cpu usage with 
template ucd/net and pfsense not showing data.

Can I help me please??

I found the problem in google and I found the template for pfsense. I 
imported the host-template-pfsense.xml but not works.

Thanks in advanced.

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