Hi Balki and thanks for the answer.
Here is some example: I have a customized widget which show me the free space of the important servers. They have to have more than 10% free space.
So, when some servers break this rule I perform cleaning of the drive or/and add more drive space (there are virtual machines so this is easy).
And I expect to view these changes to my widget after some minutes. Start manually the collectors or evaluate again every server doesn't change anything.
But this issue I mentioned also for the CPU and memory changes.