Hello. I noticed that when I use “%sc” as a value to write to a map file, this is possible. However, if I try to use it as a condition, it does not seem to work. As an example, this is what I mean:
http-after-response set-map(/path/to/m.map) %[srv_name] "%sc" if { status 503 }
The above works correctly. It writes “%sc” (number of server connections) to the map.
However, if I try to do something like below:
http-after-response set-map(/path/to/m.map) %[srv_name] %[be_name] if { "%sc" 0 }
Then I get an error: condition : missing fetch method in ACL expression '%sc'.
How can I use this or create an acl to be able to use it in the manner I mentioned above? Thank you.