evtctxgetvar()

Loads the user variable in the event context associated with the key. If no event context exists with the specified key or no variable exists, it returns null.

Syntax

evtctxgetvar(TOPIC, KEY, VARIABLE)
TOPIC
Topic of the event context.
KEY
Unique key that distinguishes the event context.
VARIABLE
User variable to load.

Usage

Use the sessionkey field value as the identifier of the web_session context and load the client_ip variable

evtctxgetvar("web_session", sessionkey, "client_ip")