Can someone share some limelight how the event RM.Event.ARTIFACT_SAVED works with a sample code if possible
One answer
At least in the 7.0.3 example asil_gadget there is use of the ARTIFACT_SAVED event - have you tried that?
See extensions for your version: https://jazz.net/wiki/bin/view/Main/RMExtensionsMain - there are examples with source code in each version