[mrtg] "problem with graphics" in mrtg

[Marcin Sypien]

Hello,
i am measuring (on UPS's with NMC installed in it):
Battery Capacity - 1.3.6.1.4.1.318.1.1.1.2.2.1.0
Temperature - 1.3.6.1.4.1.318.1.1.1.2.2.2.0
Input Voltage - 1.3.6.1.4.1.318.1.1.1.3.2.1.0
Frequency - 1.3.6.1.4.1.318.1.1.1.3.2.4.0
etc.
There is small problem, it logs only ones (1) and graphs also only ones (1). 
Could somebody help me, tell why and how to service it? 
It is important.

Marcin
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