Timeline issue

Tried using a timeline to change light intensity value, everything seems to be hooked up right but when adding frames to timeline the line remains white (all the info online shows a red line). When i compile and run, everything runs without errors but intensity seems to default to 0 and doesn’t move.

I think my issue was with time, my line is still white but i’ve gotten it to work. Also another issue might have been because i was not in the event graph but hay ho, doh.