PerformanceCounterType.NumberOfItems64 is not working

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C#

.NET

C#4.0

I create a PerfoamnceCounter like:

CounterCreationDataCollection ccdc;
PerformanceCounterCategory pcc;
ccds = new CounterCreationData[]
{
new CounterCreationData("Open Objects", "Open Objects",
                                                PerformanceCounterType.NumberOfItems64)
};
ccdc = new CounterCreationDataCollection(ccds);
            pcc = PerformanceCounterCategory.Create(pcName, pcName, PerformanceCounterCategoryType

In case I update the RawValue or use IncreaseBy the value seams to be set correct (in case I debug the application). But the windows resource monitor is not showing any updates. The same Code with a RateOfCountsPerSecond64 is working.