vSphere Web Services SDK data types are defined in the WSDL using XML Schema markup. The primitive data types are specified using the xsd namespace. For example, a string value for a property is defined as data type xsd:string. Enter a primitive value in the MOB as plain text, without quotation marks or other markup. For example, to enter an integer value of 10, type 10 in the field.

To obtain information about the available performance counters at level 4 on the server, enter a 4 in the level field of the PerformanceManager.QueryPerfCounterByLevel method. (This method is available only on the vCenter Server PerformanceManager API, not from an ESXi system.)

In response to the query, the array of PerfCounterInfo data objects and nested objects, with populated values from the server, displays in the Web browser.