Pattern: EventBeginPlay → SetTimerByFunctionName(Object=self, FunctionName='OnTimerFired', Time=1.0, bLooping=true). Create a separate custom event/function named 'OnTimerFired' — this is what the timer will call. SetTimerByFunctionName inputs: 'Object' (Object, use 'self'), 'FunctionName' (string), 'Time' (float, interval in seconds), 'bLooping' (bool). Output: 'ReturnValue' (TimerHandle).