how do i get ESXi realtime usage?

Hello everyone.

I am trying to get the ESXi realtime usage using VCO and somehow its unsuccessful.

I am using the following code:

myVcHostSystem.reload();

myEsxOverallCpuUsage = myVcHostSystem.summary.quickStats.overallCpuUsage; 

myEsxOverallMemoryUsage = myVcHostSystem.summary.quickStats.overallMemoryUsage; 

somehow i am not getting realtime performance but the same performance every time!

it doesnt matter if i am doing reload to the ESXi or starting a new process of the workflow.

Thanks in advance,

Tomer.