FortiSIEM: Clickhouse Disk Rule

Hi Guys,

I want to get notifications about disc usage when it becomes critical, but when I run the rules here, I get empty output, what is the reason for this? What is the critical level, 80 or 90, I did not see this value in custom properties.

Rule Name:

FortiSIEM ClickHouse Storage Space Critical

FortiSIEM CMDB Disk space low - prune failed to keep free disk space above high threshold