How can i add new extended attributes in automation

Question

How I was trying the below code for adding a new extended attribute to the forum thread before create event 
 
 #set($ab = $context_v2_automationTrigger.Arguments.ExtendedAttributes)
#set($ab("satish") = "1234")
#set( $context_v2_automationTrigger.Arguments.ExtendedAttributes = $ab) 
 
 But its throwing error , so how can I add a new extended attributes in automation using before create event for forum thread

Ben Tiedt · Accepted Answer

There are methods on the event argument to get/set extended attribute values. See ForumThread.BeforeCreate Automation Event