Orion.PerformanceCounters

I'm trying to extract the raw performance information using the Orion API. I've tried SWQL Studio but I get the following error:

SolarWinds.Data.Query.ParserException: The parameter(s) 'Category' are missing for entity Orion.PerformanceCounters

Using the following query:

SELECT CategoryName, InstanceName, CounterName, RawValue FROM Orion.PerformanceCounters